1431620322631 has 4 divisors (see below), whose sum is σ = 1434881417200. Its totient is φ = 1428359228064.

The previous prime is 1431620322611. The next prime is 1431620322641. The reversal of 1431620322631 is 1362230261341.

It is a happy number.

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 1431620322631 - 2²⁹ = 1431083451719 is a prime.

It is a super-2 number, since 2×1431620322631² (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 (1431620322611) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1630546626 + ... + 1630547503.

It is an arithmetic number, because the mean of its divisors is an integer number (358720354300).

Almost surely, 2^{1431620322631} is an apocalyptic number.

1431620322631 is a deficient number, since it is larger than the sum of its proper divisors (3261094569).

1431620322631 is an equidigital number, since it uses as much as digits as its factorization.

1431620322631 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3261094568.

The product of its (nonzero) digits is 31104, while the sum is 34.

Adding to 1431620322631 its reverse (1362230261341), we get a palindrome (2793850583972).

The spelling of 1431620322631 in words is "one trillion, four hundred thirty-one billion, six hundred twenty million, three hundred twenty-two thousand, six hundred thirty-one".