1231232313031 has 16 divisors (see below), whose sum is σ = 1482557266944. Its totient is φ = 999656976384.

The previous prime is 1231232312987. The next prime is 1231232313127. The reversal of 1231232313031 is 1303132321321.

It is a cyclic number.

It is not a de Polignac number, because 1231232313031 - 2²³ = 1231223924423 is a prime.

It is a super-2 number, since 2×1231232313031² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1231232312987 and 1231232313005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1231232311031) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 37106746 + ... + 37139911.

It is an arithmetic number, because the mean of its divisors is an integer number (92659829184).

Almost surely, 2^{1231232313031} is an apocalyptic number.

1231232313031 is a deficient number, since it is larger than the sum of its proper divisors (251324953913).

1231232313031 is a wasteful number, since it uses less digits than its factorization.

1231232313031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 74246790.

The product of its (nonzero) digits is 1944, while the sum is 25.

Adding to 1231232313031 its reverse (1303132321321), we get a palindrome (2534364634352).

The spelling of 1231232313031 in words is "one trillion, two hundred thirty-one billion, two hundred thirty-two million, three hundred thirteen thousand, thirty-one".