31320053400 has 96 divisors (see below), whose sum is σ = 97143068160. Its totient is φ = 8347635840.

The previous prime is 31320053399. The next prime is 31320053407. The reversal of 31320053400 is 435002313.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31320053407) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1225149 + ... + 1250451.

It is an arithmetic number, because the mean of its divisors is an integer number (1011906960).

Almost surely, 2^31320053400 is an apocalyptic number.

31320053400 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

31320053400 is an abundant number, since it is smaller than the sum of its proper divisors (65823014760).

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

31320053400 is a wasteful number, since it uses less digits than its factorization.

31320053400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27385 (or 27376 counting only the distinct ones).

The product of its (nonzero) digits is 1080, while the sum is 21.

Adding to 31320053400 its reverse (435002313), we get a palindrome (31755055713).

The spelling of 31320053400 in words is "thirty-one billion, three hundred twenty million, fifty-three thousand, four hundred".