1231004210331 has 32 divisors (see below), whose sum is σ = 1926645634048. Its totient is φ = 684372447360.

The previous prime is 1231004210327. The next prime is 1231004210357. The reversal of 1231004210331 is 1330124001321.

It is not a de Polignac number, because 1231004210331 - 2² = 1231004210327 is a prime.

It is a super-2 number, since 2×1231004210331² (a number of 25 digits) contains 22 as substring.

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

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1231004210298 and 1231004210307.

It is not an unprimeable number, because it can be changed into a prime (1231004210311) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 13461021 + ... + 13552161.

It is an arithmetic number, because the mean of its divisors is an integer number (60207676064).

Almost surely, 2^{1231004210331} is an apocalyptic number.

1231004210331 is a deficient number, since it is larger than the sum of its proper divisors (695641423717).

1231004210331 is a wasteful number, since it uses less digits than its factorization.

1231004210331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 108571.

The product of its (nonzero) digits is 432, while the sum is 21.

Adding to 1231004210331 its reverse (1330124001321), we get a palindrome (2561128211652).

The spelling of 1231004210331 in words is "one trillion, two hundred thirty-one billion, four million, two hundred ten thousand, three hundred thirty-one".