31274477623 has 6 divisors (see below), whose sum is σ = 31347059784. Its totient is φ = 31202063136.

The previous prime is 31274477579. The next prime is 31274477629. The reversal of 31274477623 is 32677447213.

It is a de Polignac number, because none of the positive numbers 2^k-31274477623 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31274477629) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 104086 + ... + 270892.

It is an arithmetic number, because the mean of its divisors is an integer number (5224509964).

Almost surely, 2^31274477623 is an apocalyptic number.

31274477623 is a deficient number, since it is larger than the sum of its proper divisors (72582161).

31274477623 is an frugal number, since it uses more digits than its factorization.

31274477623 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 167673 (or 167240 counting only the distinct ones).

The product of its digits is 1185408, while the sum is 46.

The spelling of 31274477623 in words is "thirty-one billion, two hundred seventy-four million, four hundred seventy-seven thousand, six hundred twenty-three".