231769545 has 16 divisors (see below), whose sum is σ = 423807360. Its totient is φ = 105951744.

The previous prime is 231769541. The next prime is 231769567. The reversal of 231769545 is 545967132.

It is not a de Polignac number, because 231769545 - 2² = 231769541 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 231769497 and 231769506.

It is not an unprimeable number, because it can be changed into a prime (231769541) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1103560 + ... + 1103769.

It is an arithmetic number, because the mean of its divisors is an integer number (26487960).

Almost surely, 2^231769545 is an apocalyptic number.

It is an amenable number.

231769545 is a deficient number, since it is larger than the sum of its proper divisors (192037815).

231769545 is a wasteful number, since it uses less digits than its factorization.

231769545 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2207344.

The product of its digits is 226800, while the sum is 42.

The square root of 231769545 is about 15223.9792761288. The cubic root of 231769545 is about 614.2598406136.

The spelling of 231769545 in words is "two hundred thirty-one million, seven hundred sixty-nine thousand, five hundred forty-five".