251053031 has 2 divisors, whose sum is σ = 251053032. Its totient is φ = 251053030.

The previous prime is 251053007. The next prime is 251053037. The reversal of 251053031 is 130350152.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-251053031 is a prime.

It is a super-2 number, since 2×251053031² = 126055248748573922, which contains 22 as substring.

It is a Sophie Germain prime.

It is a junction number, because it is equal to n+sod(n) for n = 251052994 and 251053012.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (251053037) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 125526515 + 125526516.

It is an arithmetic number, because the mean of its divisors is an integer number (125526516).

Almost surely, 2^251053031 is an apocalyptic number.

251053031 is a deficient number, since it is larger than the sum of its proper divisors (1).

251053031 is an equidigital number, since it uses as much as digits as its factorization.

251053031 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 450, while the sum is 20.

The square root of 251053031 is about 15844.6530728823. The cubic root of 251053031 is about 630.8437765994.

The spelling of 251053031 in words is "two hundred fifty-one million, fifty-three thousand, thirty-one".