31070346431 has 4 divisors (see below), whose sum is σ = 31113084912. Its totient is φ = 31027607952.

The previous prime is 31070346343. The next prime is 31070346469. The reversal of 31070346431 is 13464307013.

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 31070346431 - 2³⁰ = 29996604607 is a prime.

It is a super-2 number, since 2×31070346431² (a number of 22 digits) 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 (31070346631) 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, 21368150 + ... + 21369603.

It is an arithmetic number, because the mean of its divisors is an integer number (7778271228).

Almost surely, 2^31070346431 is an apocalyptic number.

31070346431 is a deficient number, since it is larger than the sum of its proper divisors (42738481).

31070346431 is an equidigital number, since it uses as much as digits as its factorization.

31070346431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42738480.

The product of its (nonzero) digits is 18144, while the sum is 32.

The spelling of 31070346431 in words is "thirty-one billion, seventy million, three hundred forty-six thousand, four hundred thirty-one".