231153345 has 40 divisors (see below), whose sum is σ = 428673960. Its totient is φ = 119024640.

The previous prime is 231153341. The next prime is 231153353. The reversal of 231153345 is 543351132.

231153345 is a `hidden beast` number, since 2 + 311 + 5 + 3 + 345 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 87441201 + 143712144 = 9351^2 + 11988^2 .

It is not a de Polignac number, because 231153345 - 2² = 231153341 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (231153341) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 1905 + ... + 21585.

It is an arithmetic number, because the mean of its divisors is an integer number (10716849).

Almost surely, 2^231153345 is an apocalyptic number.

It is an amenable number.

231153345 is a deficient number, since it is larger than the sum of its proper divisors (197520615).

231153345 is a wasteful number, since it uses less digits than its factorization.

231153345 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19727 (or 19718 counting only the distinct ones).

The product of its digits is 5400, while the sum is 27.

The square root of 231153345 is about 15203.7279967776. The cubic root of 231153345 is about 613.7149849432.

The spelling of 231153345 in words is "two hundred thirty-one million, one hundred fifty-three thousand, three hundred forty-five".