70083531 has 24 divisors (see below), whose sum is σ = 116071904. Its totient is φ = 39916800.

The previous prime is 70083521. The next prime is 70083557. The reversal of 70083531 is 13538007.

It is not a de Polignac number, because 70083531 - 2⁵ = 70083499 is a prime.

It is a super-2 number, since 2×70083531² = 9823402634855922, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 70083495 and 70083504.

It is not an unprimeable number, because it can be changed into a prime (70083521) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 19581 + ... + 22881.

Almost surely, 2^70083531 is an apocalyptic number.

70083531 is a deficient number, since it is larger than the sum of its proper divisors (45988373).

70083531 is a wasteful number, since it uses less digits than its factorization.

70083531 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3651 (or 3648 counting only the distinct ones).

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

The square root of 70083531 is about 8371.5907090588. The cubic root of 70083531 is about 412.2923958094.

The spelling of 70083531 in words is "seventy million, eighty-three thousand, five hundred thirty-one".