31841855361 has 6 divisors (see below), whose sum is σ = 45993791090. Its totient is φ = 21227903568.

The previous prime is 31841855359. The next prime is 31841855363. The reversal of 31841855361 is 16355814813.

31841855361 is a `hidden beast` number, since 3 + 1 + 84 + 18 + 553 + 6 + 1 = 666.

It is an interprime number because it is at equal distance from previous prime (31841855359) and next prime (31841855363).

It can be written as a sum of positive squares in only one way, i.e., 25009841025 + 6832014336 = 158145^2 + 82656^2 .

It is not a de Polignac number, because 31841855361 - 2¹ = 31841855359 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (31841855363) 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, 1768991956 + ... + 1768991973.

Almost surely, 2^31841855361 is an apocalyptic number.

It is an amenable number.

31841855361 is a deficient number, since it is larger than the sum of its proper divisors (14151935729).

31841855361 is a wasteful number, since it uses less digits than its factorization.

31841855361 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3537983935 (or 3537983932 counting only the distinct ones).

The product of its digits is 345600, while the sum is 45.

The spelling of 31841855361 in words is "thirty-one billion, eight hundred forty-one million, eight hundred fifty-five thousand, three hundred sixty-one".