1012137321631 has 4 divisors (see below), whose sum is σ = 1065407707000. Its totient is φ = 958866936264.

The previous prime is 1012137321599. The next prime is 1012137321677. The reversal of 1012137321631 is 1361237312101.

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

It is not a de Polignac number, because 1012137321631 - 2⁵ = 1012137321599 is a prime.

It is a super-2 number, since 2×1012137321631² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1012137321593 and 1012137321602.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1012137321131) 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, 26635192656 + ... + 26635192693.

It is an arithmetic number, because the mean of its divisors is an integer number (266351926750).

Almost surely, 2^{1012137321631} is an apocalyptic number.

1012137321631 is a deficient number, since it is larger than the sum of its proper divisors (53270385369).

1012137321631 is an equidigital number, since it uses as much as digits as its factorization.

1012137321631 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 53270385368.

The product of its (nonzero) digits is 4536, while the sum is 31.

The spelling of 1012137321631 in words is "one trillion, twelve billion, one hundred thirty-seven million, three hundred twenty-one thousand, six hundred thirty-one".