1013312131 has 4 divisors (see below), whose sum is σ = 1091259232. Its totient is φ = 935365032.

The previous prime is 1013312129. The next prime is 1013312203. The reversal of 1013312131 is 1312133101.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1312133101 = 29 ⋅45245969.

It is a cyclic number.

It is not a de Polignac number, because 1013312131 - 2¹ = 1013312129 is a prime.

It is a super-2 number, since 2×1013312131² = 2053602949663522322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1013312231) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 38973531 + ... + 38973556.

It is an arithmetic number, because the mean of its divisors is an integer number (272814808).

Almost surely, 2^1013312131 is an apocalyptic number.

1013312131 is a deficient number, since it is larger than the sum of its proper divisors (77947101).

1013312131 is an equidigital number, since it uses as much as digits as its factorization.

1013312131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 77947100.

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

The square root of 1013312131 is about 31832.5640029200. The cubic root of 1013312131 is about 1004.4178310277.

Adding to 1013312131 its reverse (1312133101), we get a palindrome (2325445232).

The spelling of 1013312131 in words is "one billion, thirteen million, three hundred twelve thousand, one hundred thirty-one".