1312953971 has 6 divisors (see below), whose sum is σ = 1527313860. Its totient is φ = 1125389076.

The previous prime is 1312953949. The next prime is 1312953997. The reversal of 1312953971 is 1793592131.

It is not a de Polignac number, because 1312953971 - 2⁶ = 1312953907 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1312953931) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 13397441 + ... + 13397538.

It is an arithmetic number, because the mean of its divisors is an integer number (254552310).

Almost surely, 2^1312953971 is an apocalyptic number.

1312953971 is a deficient number, since it is larger than the sum of its proper divisors (214359889).

1312953971 is an equidigital number, since it uses as much as digits as its factorization.

1312953971 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26794993 (or 26794986 counting only the distinct ones).

The product of its digits is 51030, while the sum is 41.

The square root of 1312953971 is about 36234.7067188352. The cubic root of 1312953971 is about 1095.0060037340.

The spelling of 1312953971 in words is "one billion, three hundred twelve million, nine hundred fifty-three thousand, nine hundred seventy-one".