31000101122100 has 72 divisors (see below), whose sum is σ = 97847591915808. Its totient is φ = 7515176028800.

The previous prime is 31000101122059. The next prime is 31000101122117. The reversal of 31000101122100 is 122110100013.

It is a super-2 number, since 2×31000101122100² (a number of 28 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 4696981719 + ... + 4696988318.

It is an arithmetic number, because the mean of its divisors is an integer number (1358994332164).

Almost surely, 2^{31000101122100} is an apocalyptic number.

31000101122100 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

31000101122100 is an abundant number, since it is smaller than the sum of its proper divisors (66847490793708).

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

31000101122100 is a wasteful number, since it uses less digits than its factorization.

31000101122100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9393970065 (or 9393970058 counting only the distinct ones).

The product of its (nonzero) digits is 12, while the sum is 12.

Adding to 31000101122100 its reverse (122110100013), we get a palindrome (31122211222113).

The spelling of 31000101122100 in words is "thirty-one trillion, one hundred one million, one hundred twenty-two thousand, one hundred".