70021915131 has 8 divisors (see below), whose sum is σ = 106700061184. Its totient is φ = 40012522920.

The previous prime is 70021915127. The next prime is 70021915151. The reversal of 70021915131 is 13151912007.

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

It is not a de Polignac number, because 70021915131 - 2² = 70021915127 is a prime.

It is a super-2 number, since 2×70021915131² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (70021915151) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1667188435 + ... + 1667188476.

It is an arithmetic number, because the mean of its divisors is an integer number (13337507648).

Almost surely, 2^70021915131 is an apocalyptic number.

70021915131 is a deficient number, since it is larger than the sum of its proper divisors (36678146053).

70021915131 is a wasteful number, since it uses less digits than its factorization.

70021915131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3334376921.

The product of its (nonzero) digits is 1890, while the sum is 30.

The spelling of 70021915131 in words is "seventy billion, twenty-one million, nine hundred fifteen thousand, one hundred thirty-one".