31143211234112 has 14 divisors (see below), whose sum is σ = 61799809792818. Its totient is φ = 15571605617024.

The previous prime is 31143211234063. The next prime is 31143211234127. The reversal of 31143211234112 is 21143211234113.

It can be written as a sum of positive squares in only one way, i.e., 30698514309376 + 444696924736 = 5540624^2 + 666856^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 243306337703 + ... + 243306337830.

Almost surely, 2^{31143211234112} is an apocalyptic number.

31143211234112 is a gapful number since it is divisible by the number (32) formed by its first and last digit.

It is an amenable number.

31143211234112 is a deficient number, since it is larger than the sum of its proper divisors (30656598558706).

31143211234112 is an equidigital number, since it uses as much as digits as its factorization.

31143211234112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 486612675545 (or 486612675535 counting only the distinct ones).

The product of its digits is 3456, while the sum is 29.

Adding to 31143211234112 its reverse (21143211234113), we get a palindrome (52286422468225).

Subtracting from 31143211234112 its reverse (21143211234113), we obtain a palindrome (9999999999999).

The spelling of 31143211234112 in words is "thirty-one trillion, one hundred forty-three billion, two hundred eleven million, two hundred thirty-four thousand, one hundred twelve".