1231330313231 has 8 divisors (see below), whose sum is σ = 1252553562240. Its totient is φ = 1210118839128.

The previous prime is 1231330313119. The next prime is 1231330313287. The reversal of 1231330313231 is 1323130331321.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1231330313231 - 2³⁴ = 1214150444047 is a prime.

It is a super-2 number, since 2×1231330313231² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1231330313231.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1231330315231) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2732651 + ... + 3151196.

It is an arithmetic number, because the mean of its divisors is an integer number (156569195280).

Almost surely, 2^{1231330313231} is an apocalyptic number.

1231330313231 is a deficient number, since it is larger than the sum of its proper divisors (21223249009).

1231330313231 is an equidigital number, since it uses as much as digits as its factorization.

1231330313231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5887453.

The product of its (nonzero) digits is 2916, while the sum is 26.

Adding to 1231330313231 its reverse (1323130331321), we get a palindrome (2554460644552).

The spelling of 1231330313231 in words is "one trillion, two hundred thirty-one billion, three hundred thirty million, three hundred thirteen thousand, two hundred thirty-one".