1013131312 has 20 divisors (see below), whose sum is σ = 1967849496. Its totient is φ = 505299200.

The previous prime is 1013131307. The next prime is 1013131331. The reversal of 1013131312 is 2131313101.

It is a Harshad number since it is a multiple of its sum of digits (16).

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 72538 + ... + 85369.

Almost surely, 2^1013131312 is an apocalyptic number.

It is an amenable number.

1013131312 is a deficient number, since it is larger than the sum of its proper divisors (954718184).

1013131312 is a wasteful number, since it uses less digits than its factorization.

1013131312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 158316 (or 158310 counting only the distinct ones).

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

The square root of 1013131312 is about 31829.7237185622. The cubic root of 1013131312 is about 1004.3580835172.

Adding to 1013131312 its reverse (2131313101), we get a palindrome (3144444413).

The spelling of 1013131312 in words is "one billion, thirteen million, one hundred thirty-one thousand, three hundred twelve".