70231538 has 16 divisors (see below), whose sum is σ = 113683416. Its totient is φ = 32348160.

The previous prime is 70231531. The next prime is 70231549. The reversal of 70231538 is 83513207.

It can be written as a sum of positive squares in 4 ways, for example, as 39904489 + 30327049 = 6317^2 + 5507^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 70231538.

It is not an unprimeable number, because it can be changed into a prime (70231531) 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, 11570 + ... + 16562.

Almost surely, 2^70231538 is an apocalyptic number.

70231538 is a deficient number, since it is larger than the sum of its proper divisors (43451878).

70231538 is a wasteful number, since it uses less digits than its factorization.

70231538 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5549.

The product of its (nonzero) digits is 5040, while the sum is 29.

The square root of 70231538 is about 8380.4258841660. The cubic root of 70231538 is about 412.5824271154.

The spelling of 70231538 in words is "seventy million, two hundred thirty-one thousand, five hundred thirty-eight".