31112320232020 has 48 divisors (see below), whose sum is σ = 66748421698560. Its totient is φ = 12178659257856.

The previous prime is 31112320231987. The next prime is 31112320232033. The reversal of 31112320232020 is 2023202321113.

It is a super-2 number, since 2×31112320232020² (a number of 28 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 31112320231982 and 31112320232000.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 86951292 + ... + 87308371.

It is an arithmetic number, because the mean of its divisors is an integer number (1390592118720).

Almost surely, 2^{31112320232020} is an apocalyptic number.

It is an amenable number.

31112320232020 is an abundant number, since it is smaller than the sum of its proper divisors (35636101466540).

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

31112320232020 is a wasteful number, since it uses less digits than its factorization.

31112320232020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 174259864 (or 174259862 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 22.

Adding to 31112320232020 its reverse (2023202321113), we get a palindrome (33135522553133).

The spelling of 31112320232020 in words is "thirty-one trillion, one hundred twelve billion, three hundred twenty million, two hundred thirty-two thousand, twenty".