1013131231 has 8 divisors (see below), whose sum is σ = 1158069920. Its totient is φ = 868243968.

The previous prime is 1013131159. The next prime is 1013131237. The reversal of 1013131231 is 1321313101.

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 1013131231 - 2⁷ = 1013131103 is a prime.

It is a super-2 number, since 2×1013131231² = 2052869782455150722, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1013131237) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 49615 + ... + 66991.

It is an arithmetic number, because the mean of its divisors is an integer number (144758740).

Almost surely, 2^1013131231 is an apocalyptic number.

1013131231 is a deficient number, since it is larger than the sum of its proper divisors (144938689).

1013131231 is an equidigital number, since it uses as much as digits as its factorization.

1013131231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25713.

The product of its (nonzero) digits is 54, while the sum is 16.

The square root of 1013131231 is about 31829.7224461666. The cubic root of 1013131231 is about 1004.3580567510.

Adding to 1013131231 its reverse (1321313101), we get a palindrome (2334444332).

The spelling of 1013131231 in words is "one billion, thirteen million, one hundred thirty-one thousand, two hundred thirty-one".