1231210332231 has 32 divisors (see below), whose sum is σ = 1843452027648. Its totient is φ = 724561443840.

The previous prime is 1231210332229. The next prime is 1231210332251. The reversal of 1231210332231 is 1322330121321.

It is not a de Polignac number, because 1231210332231 - 2¹ = 1231210332229 is a prime.

It is a super-2 number, since 2×1231210332231² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1231210332251) 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, 3458961 + ... + 3798266.

It is an arithmetic number, because the mean of its divisors is an integer number (57607875864).

Almost surely, 2^{1231210332231} is an apocalyptic number.

1231210332231 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

1231210332231 is a deficient number, since it is larger than the sum of its proper divisors (612241695417).

1231210332231 is a wasteful number, since it uses less digits than its factorization.

1231210332231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7257391.

The product of its (nonzero) digits is 1296, while the sum is 24.

Adding to 1231210332231 its reverse (1322330121321), we get a palindrome (2553540453552).

The spelling of 1231210332231 in words is "one trillion, two hundred thirty-one billion, two hundred ten million, three hundred thirty-two thousand, two hundred thirty-one".