861731096 has 16 divisors (see below), whose sum is σ = 1627541640. Its totient is φ = 427720000.

The previous prime is 861731089. The next prime is 861731113. The reversal of 861731096 is 690137168.

It is a super-2 number, since 2×861731096² = 1485160963626722432, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 392030 + ... + 394221.

Almost surely, 2^861731096 is an apocalyptic number.

It is an amenable number.

861731096 is a deficient number, since it is larger than the sum of its proper divisors (765810544).

861731096 is a wasteful number, since it uses less digits than its factorization.

861731096 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 786394 (or 786390 counting only the distinct ones).

The product of its (nonzero) digits is 54432, while the sum is 41.

The square root of 861731096 is about 29355.2567013133. The cubic root of 861731096 is about 951.6061825899.

The spelling of 861731096 in words is "eight hundred sixty-one million, seven hundred thirty-one thousand, ninety-six".