231850136 has 32 divisors (see below), whose sum is σ = 497780640. Its totient is φ = 99172608.

The previous prime is 231850133. The next prime is 231850139. The reversal of 231850136 is 631058132.

It is an interprime number because it is at equal distance from previous prime (231850133) and next prime (231850139).

It is a junction number, because it is equal to n+sod(n) for n = 231850099 and 231850108.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (231850133) 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, 27476 + ... + 34908.

It is an arithmetic number, because the mean of its divisors is an integer number (15555645).

Almost surely, 2^231850136 is an apocalyptic number.

It is an amenable number.

231850136 is an abundant number, since it is smaller than the sum of its proper divisors (265930504).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

231850136 is a wasteful number, since it uses less digits than its factorization.

231850136 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8003 (or 7999 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 29.

The square root of 231850136 is about 15226.6258901964. The cubic root of 231850136 is about 614.3310292564.

The spelling of 231850136 in words is "two hundred thirty-one million, eight hundred fifty thousand, one hundred thirty-six".