70423231 has 12 divisors (see below), whose sum is σ = 75946888. Its totient is φ = 65273472.

The previous prime is 70423201. The next prime is 70423271. The reversal of 70423231 is 13232407.

It is not a de Polignac number, because 70423231 - 2¹⁹ = 69898943 is a prime.

It is a super-2 number, since 2×70423231² = 9918862928958722, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (70423201) 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, 17545 + ... + 21181.

Almost surely, 2^70423231 is an apocalyptic number.

70423231 is a deficient number, since it is larger than the sum of its proper divisors (5523657).

70423231 is a wasteful number, since it uses less digits than its factorization.

70423231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3738 (or 3721 counting only the distinct ones).

The product of its (nonzero) digits is 1008, while the sum is 22.

The square root of 70423231 is about 8391.8550392628. The cubic root of 70423231 is about 412.9574595577.

Adding to 70423231 its reverse (13232407), we get a palindrome (83655638).

The spelling of 70423231 in words is "seventy million, four hundred twenty-three thousand, two hundred thirty-one".