31653117461 has 24 divisors (see below), whose sum is σ = 38368932120. Its totient is φ = 26004314112.

The previous prime is 31653117451. The next prime is 31653117487. The reversal of 31653117461 is 16471135613.

It can be written as a sum of positive squares in 4 ways, for example, as 2552169361 + 29100948100 = 50519^2 + 170590^2 .

It is not a de Polignac number, because 31653117461 - 2¹⁰ = 31653116437 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31653117421) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 113381 + ... + 275973.

It is an arithmetic number, because the mean of its divisors is an integer number (1598705505).

Almost surely, 2^31653117461 is an apocalyptic number.

It is an amenable number.

31653117461 is a deficient number, since it is larger than the sum of its proper divisors (6715814659).

31653117461 is a wasteful number, since it uses less digits than its factorization.

31653117461 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 162773 (or 162766 counting only the distinct ones).

The product of its digits is 45360, while the sum is 38.

The spelling of 31653117461 in words is "thirty-one billion, six hundred fifty-three million, one hundred seventeen thousand, four hundred sixty-one".