123952931 has 4 divisors (see below), whose sum is σ = 128227200. Its totient is φ = 119678664.

The previous prime is 123952901. The next prime is 123952949. The reversal of 123952931 is 139259321.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-123952931 is a prime.

It is a super-2 number, since 2×123952931² = 30728658206981522, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 123952891 and 123952900.

It is not an unprimeable number, because it can be changed into a prime (123952901) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2137091 + ... + 2137148.

It is an arithmetic number, because the mean of its divisors is an integer number (32056800).

Almost surely, 2^123952931 is an apocalyptic number.

123952931 is a deficient number, since it is larger than the sum of its proper divisors (4274269).

123952931 is an equidigital number, since it uses as much as digits as its factorization.

123952931 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4274268.

The product of its digits is 14580, while the sum is 35.

The square root of 123952931 is about 11133.4150645703. The cubic root of 123952931 is about 498.5999916118.

The spelling of 123952931 in words is "one hundred twenty-three million, nine hundred fifty-two thousand, nine hundred thirty-one".