31120023321310 has 128 divisors (see below), whose sum is σ = 70282478960640. Its totient is φ = 9638123280000.

The previous prime is 31120023321307. The next prime is 31120023321349. The reversal of 31120023321310 is 1312332002113.

It is a super-2 number, since 2×31120023321310² (a number of 28 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 180057435 + ... + 180230185.

It is an arithmetic number, because the mean of its divisors is an integer number (549081866880).

Almost surely, 2^{31120023321310} is an apocalyptic number.

31120023321310 is an abundant number, since it is smaller than the sum of its proper divisors (39162455639330).

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

31120023321310 is a wasteful number, since it uses less digits than its factorization.

31120023321310 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 174262.

The product of its (nonzero) digits is 648, while the sum is 22.

Adding to 31120023321310 its reverse (1312332002113), we get a palindrome (32432355323423).

The spelling of 31120023321310 in words is "thirty-one trillion, one hundred twenty billion, twenty-three million, three hundred twenty-one thousand, three hundred ten".