70293431 has 4 divisors (see below), whose sum is σ = 75700632. Its totient is φ = 64886232.

The previous prime is 70293427. The next prime is 70293437. The reversal of 70293431 is 13439207.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 13439207 = 233 ⋅57679.

It is a cyclic number.

It is not a de Polignac number, because 70293431 - 2² = 70293427 is a prime.

It is a super-2 number, since 2×70293431² = 9882332883503522, 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 = 70293394 and 70293403.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (70293437) 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, 2703581 + ... + 2703606.

It is an arithmetic number, because the mean of its divisors is an integer number (18925158).

Almost surely, 2^70293431 is an apocalyptic number.

70293431 is a deficient number, since it is larger than the sum of its proper divisors (5407201).

70293431 is a wasteful number, since it uses less digits than its factorization.

70293431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5407200.

The product of its (nonzero) digits is 4536, while the sum is 29.

The square root of 70293431 is about 8384.1177830467. The cubic root of 70293431 is about 412.7035904712.

The spelling of 70293431 in words is "seventy million, two hundred ninety-three thousand, four hundred thirty-one".