31123011311130 has 128 divisors (see below), whose sum is σ = 76006789447680. Its totient is φ = 8155036834560.

The previous prime is 31123011311087. The next prime is 31123011311201. The reversal of 31123011311130 is 3111311032113.

It is a junction number, because it is equal to n+sod(n) for n = 31123011311097 and 31123011311106.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 2111315560 + ... + 2111330300.

It is an arithmetic number, because the mean of its divisors is an integer number (593803042560).

Almost surely, 2^{31123011311130} is an apocalyptic number.

31123011311130 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

31123011311130 is an abundant number, since it is smaller than the sum of its proper divisors (44883778136550).

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

31123011311130 is a wasteful number, since it uses less digits than its factorization.

31123011311130 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20164.

The product of its (nonzero) digits is 162, while the sum is 21.

Adding to 31123011311130 its reverse (3111311032113), we get a palindrome (34234322343243).

The spelling of 31123011311130 in words is "thirty-one trillion, one hundred twenty-three billion, eleven million, three hundred eleven thousand, one hundred thirty".