31102013430 has 96 divisors (see below), whose sum is σ = 82508025600. Its totient is φ = 8126312256.

The previous prime is 31102013407. The next prime is 31102013447. The reversal of 31102013430 is 3431020113.

31102013430 is a `hidden beast` number, since 31 + 1 + 0 + 201 + 3 + 430 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1620631 + ... + 1639709.

It is an arithmetic number, because the mean of its divisors is an integer number (859458600).

Almost surely, 2^31102013430 is an apocalyptic number.

31102013430 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 31102013430, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (41254012800).

31102013430 is an abundant number, since it is smaller than the sum of its proper divisors (51406012170).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

31102013430 is a wasteful number, since it uses less digits than its factorization.

31102013430 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19458 (or 19455 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 18.

Adding to 31102013430 its reverse (3431020113), we get a palindrome (34533033543).

The spelling of 31102013430 in words is "thirty-one billion, one hundred two million, thirteen thousand, four hundred thirty".