31114545643 has 4 divisors (see below), whose sum is σ = 32187461040. Its totient is φ = 30041630248.

The previous prime is 31114545571. The next prime is 31114545661. The reversal of 31114545643 is 34654541113.

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 31114545643 - 2⁹ = 31114545131 is a prime.

It is a super-2 number, since 2×31114545643² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (31114545743) 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, 536457655 + ... + 536457712.

It is an arithmetic number, because the mean of its divisors is an integer number (8046865260).

Almost surely, 2^31114545643 is an apocalyptic number.

31114545643 is a deficient number, since it is larger than the sum of its proper divisors (1072915397).

31114545643 is a wasteful number, since it uses less digits than its factorization.

31114545643 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1072915396.

The product of its digits is 86400, while the sum is 37.

The spelling of 31114545643 in words is "thirty-one billion, one hundred fourteen million, five hundred forty-five thousand, six hundred forty-three".