31152019897 has 8 divisors (see below), whose sum is σ = 31880328480. Its totient is φ = 30423886080.

The previous prime is 31152019859. The next prime is 31152019931. The reversal of 31152019897 is 79891025113.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-31152019897 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (31152019397) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 360054 + ... + 438112.

It is an arithmetic number, because the mean of its divisors is an integer number (3985041060).

Almost surely, 2^31152019897 is an apocalyptic number.

It is an amenable number.

31152019897 is a deficient number, since it is larger than the sum of its proper divisors (728308583).

31152019897 is an equidigital number, since it uses as much as digits as its factorization.

31152019897 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 87383.

The product of its (nonzero) digits is 136080, while the sum is 46.

The spelling of 31152019897 in words is "thirty-one billion, one hundred fifty-two million, nineteen thousand, eight hundred ninety-seven".