70312497 has 4 divisors (see below), whose sum is σ = 93750000. Its totient is φ = 46874996.

The previous prime is 70312481. The next prime is 70312513. The reversal of 70312497 is 79421307.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is an interprime number because it is at equal distance from previous prime (70312481) and next prime (70312513).

It is a cyclic number.

It is not a de Polignac number, because 70312497 - 2⁴ = 70312481 is a prime.

It is not an unprimeable number, because it can be changed into a prime (70312097) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11718747 + ... + 11718752.

It is an arithmetic number, because the mean of its divisors is an integer number (23437500).

Almost surely, 2^70312497 is an apocalyptic number.

It is an amenable number.

70312497 is a deficient number, since it is larger than the sum of its proper divisors (23437503).

70312497 is a wasteful number, since it uses less digits than its factorization.

70312497 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23437502.

The product of its (nonzero) digits is 10584, while the sum is 33.

The square root of 70312497 is about 8385.2547367388. The cubic root of 70312497 is about 412.7409002417.

The spelling of 70312497 in words is "seventy million, three hundred twelve thousand, four hundred ninety-seven".