231700039 has 6 divisors (see below), whose sum is σ = 237215616. Its totient is φ = 226309860.

The previous prime is 231699991. The next prime is 231700057. The reversal of 231700039 is 930007132.

It is not a de Polignac number, because 231700039 - 2⁷ = 231699911 is a prime.

It is a super-4 number, since 4×231700039⁴ (a number of 35 digits) contains 4444 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 231699986 and 231700022.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (231700069) 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, 60807 + ... + 64504.

It is an arithmetic number, because the mean of its divisors is an integer number (39535936).

Almost surely, 2^231700039 is an apocalyptic number.

231700039 is a deficient number, since it is larger than the sum of its proper divisors (5515577).

231700039 is an equidigital number, since it uses as much as digits as its factorization.

231700039 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 125397 (or 125354 counting only the distinct ones).

The product of its (nonzero) digits is 1134, while the sum is 25.

The square root of 231700039 is about 15221.6963246545. The cubic root of 231700039 is about 614.1984304556.

The spelling of 231700039 in words is "two hundred thirty-one million, seven hundred thousand, thirty-nine".