231545434435251 has 16 divisors (see below), whose sum is σ = 312696476367360. Its totient is φ = 152379773863200.

The previous prime is 231545434435229. The next prime is 231545434435283. The reversal of 231545434435251 is 152534434545132.

It is not a de Polignac number, because 231545434435251 - 2¹⁴ = 231545434418867 is a prime.

It is a super-2 number, since 2×231545434435251² (a number of 30 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 231545434435194 and 231545434435203.

It is not an unprimeable number, because it can be changed into a prime (231545434435751) 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, 94555125 + ... + 96972998.

It is an arithmetic number, because the mean of its divisors is an integer number (19543529772960).

Almost surely, 2^{231545434435251} is an apocalyptic number.

231545434435251 is a deficient number, since it is larger than the sum of its proper divisors (81151041932109).

231545434435251 is a wasteful number, since it uses less digits than its factorization.

231545434435251 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 191533306.

The product of its digits is 17280000, while the sum is 51.

The spelling of 231545434435251 in words is "two hundred thirty-one trillion, five hundred forty-five billion, four hundred thirty-four million, four hundred thirty-five thousand, two hundred fifty-one".