251828131 has 2 divisors, whose sum is σ = 251828132. Its totient is φ = 251828130.

The previous prime is 251828117. The next prime is 251828153. The reversal of 251828131 is 131828152.

251828131 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 251828131 - 2¹⁵ = 251795363 is a prime.

It is a super-2 number, since 2×251828131² = 126834815125906322, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 251828093 and 251828102.

It is not a weakly prime, because it can be changed into another prime (251820131) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 125914065 + 125914066.

It is an arithmetic number, because the mean of its divisors is an integer number (125914066).

Almost surely, 2^251828131 is an apocalyptic number.

251828131 is a deficient number, since it is larger than the sum of its proper divisors (1).

251828131 is an equidigital number, since it uses as much as digits as its factorization.

251828131 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3840, while the sum is 31.

The square root of 251828131 is about 15869.0935783995. The cubic root of 251828131 is about 631.4923310225.

The spelling of 251828131 in words is "two hundred fifty-one million, eight hundred twenty-eight thousand, one hundred thirty-one".