31059487973 has 4 divisors (see below), whose sum is σ = 31129600128. Its totient is φ = 30989375820.

The previous prime is 31059487957. The next prime is 31059487999. The reversal of 31059487973 is 37978495013.

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 31059487973 - 2⁴ = 31059487957 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31059487933) 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, 35055413 + ... + 35056298.

It is an arithmetic number, because the mean of its divisors is an integer number (7782400032).

Almost surely, 2^31059487973 is an apocalyptic number.

It is an amenable number.

31059487973 is a deficient number, since it is larger than the sum of its proper divisors (70112155).

31059487973 is an equidigital number, since it uses as much as digits as its factorization.

31059487973 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 70112154.

The product of its (nonzero) digits is 5715360, while the sum is 56.

The spelling of 31059487973 in words is "thirty-one billion, fifty-nine million, four hundred eighty-seven thousand, nine hundred seventy-three".