70392131 has 4 divisors (see below), whose sum is σ = 74097000. Its totient is φ = 66687264.

The previous prime is 70392089. The next prime is 70392137. The reversal of 70392131 is 13129307.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 70392131 - 2⁶ = 70392067 is a prime.

It is a super-2 number, since 2×70392131² = 9910104213442322, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 70392131.

It is not an unprimeable number, because it can be changed into a prime (70392137) 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, 1852406 + ... + 1852443.

It is an arithmetic number, because the mean of its divisors is an integer number (18524250).

Almost surely, 2^70392131 is an apocalyptic number.

70392131 is a deficient number, since it is larger than the sum of its proper divisors (3704869).

70392131 is a wasteful number, since it uses less digits than its factorization.

70392131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3704868.

The product of its (nonzero) digits is 1134, while the sum is 26.

The square root of 70392131 is about 8390.0018474372. The cubic root of 70392131 is about 412.8966611165.

The spelling of 70392131 in words is "seventy million, three hundred ninety-two thousand, one hundred thirty-one".