231497051 has 4 divisors (see below), whose sum is σ = 231603504. Its totient is φ = 231390600.

The previous prime is 231497039. The next prime is 231497069. The reversal of 231497051 is 150794132.

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-231497051 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 231496999 and 231497017.

It is not an unprimeable number, because it can be changed into a prime (231497011) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 49895 + ... + 54336.

It is an arithmetic number, because the mean of its divisors is an integer number (57900876).

Almost surely, 2^231497051 is an apocalyptic number.

231497051 is a deficient number, since it is larger than the sum of its proper divisors (106453).

231497051 is a wasteful number, since it uses less digits than its factorization.

231497051 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 106452.

The product of its (nonzero) digits is 7560, while the sum is 32.

The square root of 231497051 is about 15215.0271442413. The cubic root of 231497051 is about 614.0190155280.

The spelling of 231497051 in words is "two hundred thirty-one million, four hundred ninety-seven thousand, fifty-one".