70038531 has 12 divisors (see below), whose sum is σ = 101753808. Its totient is φ = 46421424.

The previous prime is 70038523. The next prime is 70038539. The reversal of 70038531 is 13583007.

It is an interprime number because it is at equal distance from previous prime (70038523) and next prime (70038539).

It is not a de Polignac number, because 70038531 - 2³ = 70038523 is a prime.

It is a super-2 number, since 2×70038531² = 9810791649275922, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 70038495 and 70038504.

It is not an unprimeable number, because it can be changed into a prime (70038539) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 20935 + ... + 24048.

It is an arithmetic number, because the mean of its divisors is an integer number (8479484).

Almost surely, 2^70038531 is an apocalyptic number.

70038531 is a deficient number, since it is larger than the sum of its proper divisors (31715277).

70038531 is a wasteful number, since it uses less digits than its factorization.

70038531 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45162 (or 45159 counting only the distinct ones).

The product of its (nonzero) digits is 2520, while the sum is 27.

The square root of 70038531 is about 8368.9026162335. The cubic root of 70038531 is about 412.2041338459.

The spelling of 70038531 in words is "seventy million, thirty-eight thousand, five hundred thirty-one".