1013131131 has 8 divisors (see below), whose sum is σ = 1352428560. Its totient is φ = 674627232.

The previous prime is 1013131123. The next prime is 1013131159. The reversal of 1013131131 is 1311313101.

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

It is not a de Polignac number, because 1013131131 - 2³ = 1013131123 is a prime.

It is a super-2 number, since 2×1013131131² = 2052869377202678322, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1013131131.

It is not an unprimeable number, because it can be changed into a prime (1013131331) 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, 195396 + ... + 200513.

It is an arithmetic number, because the mean of its divisors is an integer number (169053570).

Almost surely, 2^1013131131 is an apocalyptic number.

1013131131 is a deficient number, since it is larger than the sum of its proper divisors (339297429).

1013131131 is an equidigital number, since it uses as much as digits as its factorization.

1013131131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 396765.

The product of its (nonzero) digits is 27, while the sum is 15.

The square root of 1013131131 is about 31829.7208753077. The cubic root of 1013131131 is about 1004.3580237063.

Adding to 1013131131 its reverse (1311313101), we get a palindrome (2324444232).

The spelling of 1013131131 in words is "one billion, thirteen million, one hundred thirty-one thousand, one hundred thirty-one".