861307371 has 8 divisors (see below), whose sum is σ = 1276010960. Its totient is φ = 574204896.

The previous prime is 861307327. The next prime is 861307417. The reversal of 861307371 is 173703168.

861307371 is a `hidden beast` number, since 8 + 613 + 0 + 7 + 37 + 1 = 666.

It is a de Polignac number, because none of the positive numbers 2^k-861307371 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (861307471) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15950110 + ... + 15950163.

It is an arithmetic number, because the mean of its divisors is an integer number (159501370).

Almost surely, 2^861307371 is an apocalyptic number.

861307371 is a deficient number, since it is larger than the sum of its proper divisors (414703589).

861307371 is a wasteful number, since it uses less digits than its factorization.

861307371 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31900282 (or 31900276 counting only the distinct ones).

The product of its (nonzero) digits is 21168, while the sum is 36.

The square root of 861307371 is about 29348.0386227087. The cubic root of 861307371 is about 951.4501844140.

The spelling of 861307371 in words is "eight hundred sixty-one million, three hundred seven thousand, three hundred seventy-one".