861232923 has 24 divisors (see below), whose sum is σ = 1289405520. Its totient is φ = 553277760.

The previous prime is 861232919. The next prime is 861232927. The reversal of 861232923 is 329232168.

861232923 is a `hidden beast` number, since 8 + 612 + 32 + 9 + 2 + 3 = 666.

It is an interprime number because it is at equal distance from previous prime (861232919) and next prime (861232927).

It is not a de Polignac number, because 861232923 - 2² = 861232919 is a prime.

It is not an unprimeable number, because it can be changed into a prime (861232927) 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, 144013 + ... + 149873.

It is an arithmetic number, because the mean of its divisors is an integer number (53725230).

Almost surely, 2^861232923 is an apocalyptic number.

861232923 is a deficient number, since it is larger than the sum of its proper divisors (428172597).

861232923 is a wasteful number, since it uses less digits than its factorization.

861232923 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6459 (or 6456 counting only the distinct ones).

The product of its digits is 31104, while the sum is 36.

The square root of 861232923 is about 29346.7702311515. The cubic root of 861232923 is about 951.4227704281.

The spelling of 861232923 in words is "eight hundred sixty-one million, two hundred thirty-two thousand, nine hundred twenty-three".