31420131959 has 4 divisors (see below), whose sum is σ = 31425518880. Its totient is φ = 31414745040.

The previous prime is 31420131947. The next prime is 31420131989. The reversal of 31420131959 is 95913102413.

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 31420131959 - 2⁴ = 31420131943 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 (31420131929) 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, 2684702 + ... + 2696379.

It is an arithmetic number, because the mean of its divisors is an integer number (7856379720).

Almost surely, 2^31420131959 is an apocalyptic number.

31420131959 is a deficient number, since it is larger than the sum of its proper divisors (5386921).

31420131959 is an equidigital number, since it uses as much as digits as its factorization.

31420131959 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5386920.

The product of its (nonzero) digits is 29160, while the sum is 38.

The spelling of 31420131959 in words is "thirty-one billion, four hundred twenty million, one hundred thirty-one thousand, nine hundred fifty-nine".