1312350163421 has 4 divisors (see below), whose sum is σ = 1431654723744. Its totient is φ = 1193045603100.

The previous prime is 1312350163417. The next prime is 1312350163433. The reversal of 1312350163421 is 1243610532131.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1312350163421 - 2² = 1312350163417 is a prime.

It is a super-2 number, since 2×1312350163421² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1312350169421) 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, 59652280145 + ... + 59652280166.

It is an arithmetic number, because the mean of its divisors is an integer number (357913680936).

Almost surely, 2^{1312350163421} is an apocalyptic number.

1312350163421 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1312350163421 is a deficient number, since it is larger than the sum of its proper divisors (119304560323).

1312350163421 is a wasteful number, since it uses less digits than its factorization.

1312350163421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 119304560322.

The product of its (nonzero) digits is 12960, while the sum is 32.

Adding to 1312350163421 its reverse (1243610532131), we get a palindrome (2555960695552).

The spelling of 1312350163421 in words is "one trillion, three hundred twelve billion, three hundred fifty million, one hundred sixty-three thousand, four hundred twenty-one".