231200013 has 16 divisors (see below), whose sum is σ = 345381696. Its totient is φ = 136333440.

The previous prime is 231199993. The next prime is 231200023. The reversal of 231200013 is 310002132.

It is a happy number.

It is not a de Polignac number, because 231200013 - 2⁵ = 231199981 is a prime.

It is a super-2 number, since 2×231200013² = 106906892022400338, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (231200023) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 93456 + ... + 95897.

It is an arithmetic number, because the mean of its divisors is an integer number (21586356).

Almost surely, 2^231200013 is an apocalyptic number.

It is an amenable number.

231200013 is a deficient number, since it is larger than the sum of its proper divisors (114181683).

231200013 is a wasteful number, since it uses less digits than its factorization.

231200013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 189404.

The product of its (nonzero) digits is 36, while the sum is 12.

The square root of 231200013 is about 15205.2626744821. The cubic root of 231200013 is about 613.7562835361.

Adding to 231200013 its reverse (310002132), we get a palindrome (541202145).

The spelling of 231200013 in words is "two hundred thirty-one million, two hundred thousand, thirteen".