131000251 has 2 divisors, whose sum is σ = 131000252. Its totient is φ = 131000250.

The previous prime is 131000227. The next prime is 131000267. The reversal of 131000251 is 152000131.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-131000251 is a prime.

It is a super-2 number, since 2×131000251² = 34322131524126002, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (131000281) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 65500125 + 65500126.

It is an arithmetic number, because the mean of its divisors is an integer number (65500126).

Almost surely, 2^131000251 is an apocalyptic number.

131000251 is a deficient number, since it is larger than the sum of its proper divisors (1).

131000251 is an equidigital number, since it uses as much as digits as its factorization.

131000251 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 30, while the sum is 13.

The square root of 131000251 is about 11445.5341072403. The cubic root of 131000251 is about 507.8756321813.

Adding to 131000251 its reverse (152000131), we get a palindrome (283000382).

The spelling of 131000251 in words is "one hundred thirty-one million, two hundred fifty-one", and thus it is an aban number.