31407474953 has 4 divisors (see below), whose sum is σ = 31760368020. Its totient is φ = 31054581888.

The previous prime is 31407474949. The next prime is 31407474977. The reversal of 31407474953 is 35947470413.

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

It can be written as a sum of positive squares in 2 ways, for example, as 19715810569 + 11691664384 = 140413^2 + 108128^2 .

It is a cyclic number.

It is not a de Polignac number, because 31407474953 - 2² = 31407474949 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 31407474898 and 31407474907.

It is not an unprimeable number, because it can be changed into a prime (31407474913) 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, 176446400 + ... + 176446577.

It is an arithmetic number, because the mean of its divisors is an integer number (7940092005).

Almost surely, 2^31407474953 is an apocalyptic number.

It is an amenable number.

31407474953 is a deficient number, since it is larger than the sum of its proper divisors (352893067).

31407474953 is an equidigital number, since it uses as much as digits as its factorization.

31407474953 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 352893066.

The product of its (nonzero) digits is 1270080, while the sum is 47.

The spelling of 31407474953 in words is "thirty-one billion, four hundred seven million, four hundred seventy-four thousand, nine hundred fifty-three".