251041023 has 36 divisors (see below), whose sum is σ = 397844928. Its totient is φ = 152006400.

The previous prime is 251041013. The next prime is 251041031. The reversal of 251041023 is 320140152.

251041023 is a `hidden beast` number, since 251 + 0 + 410 + 2 + 3 = 666.

It is a de Polignac number, because none of the positive numbers 2^k-251041023 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 251040987 and 251041005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (251041013) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 127698 + ... + 129648.

It is an arithmetic number, because the mean of its divisors is an integer number (11051248).

Almost surely, 2^251041023 is an apocalyptic number.

251041023 is a deficient number, since it is larger than the sum of its proper divisors (146803905).

251041023 is a wasteful number, since it uses less digits than its factorization.

251041023 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2032 (or 2000 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 18.

The square root of 251041023 is about 15844.2741392593. The cubic root of 251041023 is about 630.8337185745.

Adding to 251041023 its reverse (320140152), we get a palindrome (571181175).

The spelling of 251041023 in words is "two hundred fifty-one million, forty-one thousand, twenty-three".