1312132651 has 4 divisors (see below), whose sum is σ = 1312205112. Its totient is φ = 1312060192.

The previous prime is 1312132643. The next prime is 1312132663. The reversal of 1312132651 is 1562312131.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 1562312131 = 163 ⋅9584737.

It is a cyclic number.

It is not a de Polignac number, because 1312132651 - 2³ = 1312132643 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1312132051) 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, 17076 + ... + 53998.

It is an arithmetic number, because the mean of its divisors is an integer number (328051278).

Almost surely, 2^1312132651 is an apocalyptic number.

1312132651 is a deficient number, since it is larger than the sum of its proper divisors (72461).

1312132651 is an equidigital number, since it uses as much as digits as its factorization.

1312132651 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 72460.

The product of its digits is 1080, while the sum is 25.

The square root of 1312132651 is about 36223.3716128137. The cubic root of 1312132651 is about 1094.7776286485. Note that the first 3 decimals are identical.

Adding to 1312132651 its reverse (1562312131), we get a palindrome (2874444782).

The spelling of 1312132651 in words is "one billion, three hundred twelve million, one hundred thirty-two thousand, six hundred fifty-one".