70310431 has 4 divisors (see below), whose sum is σ = 74011000. Its totient is φ = 66609864.

The previous prime is 70310423. The next prime is 70310447. The reversal of 70310431 is 13401307.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 70310431 - 2³ = 70310423 is a prime.

It is a super-2 number, since 2×70310431² = 9887113414811522, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (19), and also a Moran number because the ratio is a prime number: 3700549 = 70310431 / (7 + 0 + 3 + 1 + 0 + 4 + 3 + 1).

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 70310399 and 70310408.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (70310411) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1850256 + ... + 1850293.

It is an arithmetic number, because the mean of its divisors is an integer number (18502750).

Almost surely, 2^70310431 is an apocalyptic number.

70310431 is a deficient number, since it is larger than the sum of its proper divisors (3700569).

70310431 is a wasteful number, since it uses less digits than its factorization.

70310431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3700568.

The product of its (nonzero) digits is 252, while the sum is 19.

The square root of 70310431 is about 8385.1315433927. The cubic root of 70310431 is about 412.7368576647.

Adding to 70310431 its reverse (13401307), we get a palindrome (83711738).

The spelling of 70310431 in words is "seventy million, three hundred ten thousand, four hundred thirty-one".