231013651 has 16 divisors (see below), whose sum is σ = 258007680. Its totient is φ = 205078720.

The previous prime is 231013621. The next prime is 231013661. The reversal of 231013651 is 156310132.

It is a happy number.

It is a de Polignac number, because none of the positive numbers 2^k-231013651 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (231013621) 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, 79836 + ... + 82678.

It is an arithmetic number, because the mean of its divisors is an integer number (16125480).

Almost surely, 2^231013651 is an apocalyptic number.

231013651 is a deficient number, since it is larger than the sum of its proper divisors (26994029).

231013651 is a wasteful number, since it uses less digits than its factorization.

231013651 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3026.

The product of its (nonzero) digits is 540, while the sum is 22.

The square root of 231013651 is about 15199.1332318656. The cubic root of 231013651 is about 613.5913302653.

Adding to 231013651 its reverse (156310132), we get a palindrome (387323783).

The spelling of 231013651 in words is "two hundred thirty-one million, thirteen thousand, six hundred fifty-one".