31421476723 has 12 divisors (see below), whose sum is σ = 39363169440. Its totient is φ = 24860948112.

The previous prime is 31421476711. The next prime is 31421476733. The reversal of 31421476723 is 32767412413.

It is a de Polignac number, because none of the positive numbers 2^k-31421476723 is a prime.

It is not an unprimeable number, because it can be changed into a prime (31421476733) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 24663003 + ... + 24664276.

It is an arithmetic number, because the mean of its divisors is an integer number (3280264120).

Almost surely, 2^31421476723 is an apocalyptic number.

31421476723 is a deficient number, since it is larger than the sum of its proper divisors (7941692717).

31421476723 is a wasteful number, since it uses less digits than its factorization.

31421476723 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49327306 (or 49327299 counting only the distinct ones).

The product of its digits is 169344, while the sum is 40.

The spelling of 31421476723 in words is "thirty-one billion, four hundred twenty-one million, four hundred seventy-six thousand, seven hundred twenty-three".