1392321864631 has 4 divisors (see below), whose sum is σ = 1392325074000. Its totient is φ = 1392318655264.

The previous prime is 1392321864613. The next prime is 1392321864673. The reversal of 1392321864631 is 1364681232931.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1392321864631 - 2⁵ = 1392321864599 is a prime.

It is a super-2 number, since 2×1392321864631² (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 (1392321865631) 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, 828931 + ... + 1863268.

It is an arithmetic number, because the mean of its divisors is an integer number (348081268500).

Almost surely, 2^{1392321864631} is an apocalyptic number.

1392321864631 is a deficient number, since it is larger than the sum of its proper divisors (3209369).

1392321864631 is an equidigital number, since it uses as much as digits as its factorization.

1392321864631 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3209368.

The product of its digits is 1119744, while the sum is 49.

The spelling of 1392321864631 in words is "one trillion, three hundred ninety-two billion, three hundred twenty-one million, eight hundred sixty-four thousand, six hundred thirty-one".