1312200131 has 8 divisors (see below), whose sum is σ = 1515696624. Its totient is φ = 1122737920.

The previous prime is 1312200119. The next prime is 1312200143. The reversal of 1312200131 is 1310022131.

It is an interprime number because it is at equal distance from previous prime (1312200119) and next prime (1312200143).

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 1312200131 - 2⁶ = 1312200067 is a prime.

It is a super-2 number, since 2×1312200131² = 3443738367592834322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1312200151) 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, 3508370 + ... + 3508743.

It is an arithmetic number, because the mean of its divisors is an integer number (189462078).

Almost surely, 2^1312200131 is an apocalyptic number.

1312200131 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

1312200131 is a deficient number, since it is larger than the sum of its proper divisors (203496493).

1312200131 is a wasteful number, since it uses less digits than its factorization.

1312200131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7017141.

The product of its (nonzero) digits is 36, while the sum is 14.

The square root of 1312200131 is about 36224.3030436750. The cubic root of 1312200131 is about 1094.7963956352.

Adding to 1312200131 its reverse (1310022131), we get a palindrome (2622222262).

The spelling of 1312200131 in words is "one billion, three hundred twelve million, two hundred thousand, one hundred thirty-one".