31123022210112 has 56 divisors (see below), whose sum is σ = 94110090972736. Its totient is φ = 8892292059648.

The previous prime is 31123022210107. The next prime is 31123022210129. The reversal of 31123022210112 is 21101222032113.

It is a tau number, because it is divible by the number of its divisors (56).

It is a super-2 number, since 2×31123022210112² (a number of 28 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11578503943 + ... + 11578506630.

Almost surely, 2^{31123022210112} is an apocalyptic number.

31123022210112 is a gapful number since it is divisible by the number (32) formed by its first and last digit.

It is an amenable number.

31123022210112 is an abundant number, since it is smaller than the sum of its proper divisors (62987068762624).

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

31123022210112 is a wasteful number, since it uses less digits than its factorization.

31123022210112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23157010595 (or 23157010585 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 21.

Adding to 31123022210112 its reverse (21101222032113), we get a palindrome (52224244242225).

The spelling of 31123022210112 in words is "thirty-one trillion, one hundred twenty-three billion, twenty-two million, two hundred ten thousand, one hundred twelve".