31496426837 has 4 divisors (see below), whose sum is σ = 32030264640. Its totient is φ = 30962589036.

The previous prime is 31496426821. The next prime is 31496426867. The reversal of 31496426837 is 73862469413.

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, and also an emirpimes, since its reverse is a distinct semiprime: 73862469413 = 523 ⋅141228431.

It is a cyclic number.

It is not a de Polignac number, because 31496426837 - 2⁴ = 31496426821 is a prime.

It is a Duffinian number.

It is a nialpdrome in base 16.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31496426867) 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, 266918813 + ... + 266918930.

It is an arithmetic number, because the mean of its divisors is an integer number (8007566160).

Almost surely, 2^31496426837 is an apocalyptic number.

It is an amenable number.

31496426837 is a deficient number, since it is larger than the sum of its proper divisors (533837803).

31496426837 is an equidigital number, since it uses as much as digits as its factorization.

31496426837 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 533837802.

The product of its digits is 5225472, while the sum is 53.

The spelling of 31496426837 in words is "thirty-one billion, four hundred ninety-six million, four hundred twenty-six thousand, eight hundred thirty-seven".