231131133301100 has 36 divisors (see below), whose sum is σ = 501723490375800. Its totient is φ = 92421313944960.

The previous prime is 231131133301039. The next prime is 231131133301109. The reversal of 231131133301100 is 1103331131132.

It is a super-2 number, since 2×231131133301100² (a number of 30 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (231131133301109) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 388943810 + ... + 389537609.

It is an arithmetic number, because the mean of its divisors is an integer number (13936763621550).

Almost surely, 2^{231131133301100} is an apocalyptic number.

231131133301100 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

231131133301100 is an abundant number, since it is smaller than the sum of its proper divisors (270592357074700).

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

231131133301100 is a wasteful number, since it uses less digits than its factorization.

231131133301100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 778484402 (or 778484395 counting only the distinct ones).

The product of its (nonzero) digits is 486, while the sum is 23.

Adding to 231131133301100 its reverse (1103331131132), we get a palindrome (232234464432232).

The spelling of 231131133301100 in words is "two hundred thirty-one trillion, one hundred thirty-one billion, one hundred thirty-three million, three hundred one thousand, one hundred".