253231623 has 16 divisors (see below), whose sum is σ = 376777440. Its totient is φ = 168092352.

The previous prime is 253231603. The next prime is 253231673. The reversal of 253231623 is 326132352.

253231623 is a `hidden beast` number, since 2 + 5 + 3 + 2 + 31 + 623 = 666.

It is a de Polignac number, because none of the positive numbers 2^k-253231623 is a prime.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (253231603) 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, 13836 + ... + 26417.

It is an arithmetic number, because the mean of its divisors is an integer number (23548590).

Almost surely, 2^253231623 is an apocalyptic number.

253231623 is a deficient number, since it is larger than the sum of its proper divisors (123545817).

253231623 is a wasteful number, since it uses less digits than its factorization.

253231623 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40495 (or 40489 counting only the distinct ones).

The product of its digits is 6480, while the sum is 27.

The square root of 253231623 is about 15913.2530615208. The cubic root of 253231623 is about 632.6633055908.

Adding to 253231623 its reverse (326132352), we get a palindrome (579363975).

The spelling of 253231623 in words is "two hundred fifty-three million, two hundred thirty-one thousand, six hundred twenty-three".