70493731 has 24 divisors (see below), whose sum is σ = 89743104. Its totient is φ = 53793840.

The previous prime is 70493729. The next prime is 70493741. The reversal of 70493731 is 13739407.

It is not a de Polignac number, because 70493731 - 2¹ = 70493729 is a prime.

It is a super-2 number, since 2×70493731² = 9938732220600722, which contains 22 as substring.

It is a hoax number, since the sum of its digits (34) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (70493701) 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, 267906 + ... + 268168.

It is an arithmetic number, because the mean of its divisors is an integer number (3739296).

Almost surely, 2^70493731 is an apocalyptic number.

70493731 is a deficient number, since it is larger than the sum of its proper divisors (19249373).

70493731 is a wasteful number, since it uses less digits than its factorization.

70493731 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 399 (or 340 counting only the distinct ones).

The product of its (nonzero) digits is 15876, while the sum is 34.

The square root of 70493731 is about 8396.0544900566. The cubic root of 70493731 is about 413.0952161417.

The spelling of 70493731 in words is "seventy million, four hundred ninety-three thousand, seven hundred thirty-one".