70140431 has 4 divisors (see below), whose sum is σ = 70190352. Its totient is φ = 70090512.

The previous prime is 70140407. The next prime is 70140443. The reversal of 70140431 is 13404107.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 13404107 = 2287 ⋅5861.

It is a cyclic number.

It is not a de Polignac number, because 70140431 - 2¹⁸ = 69878287 is a prime.

It is a super-2 number, since 2×70140431² = 9839360121731522, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (70140451) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 22790 + ... + 25683.

It is an arithmetic number, because the mean of its divisors is an integer number (17547588).

Almost surely, 2^70140431 is an apocalyptic number.

70140431 is a deficient number, since it is larger than the sum of its proper divisors (49921).

70140431 is a wasteful number, since it uses less digits than its factorization.

70140431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 49920.

The product of its (nonzero) digits is 336, while the sum is 20.

The square root of 70140431 is about 8374.9884179024. The cubic root of 70140431 is about 412.4039440863.

Adding to 70140431 its reverse (13404107), we get a palindrome (83544538).

The spelling of 70140431 in words is "seventy million, one hundred forty thousand, four hundred thirty-one".