1631424251 has 2 divisors, whose sum is σ = 1631424252. Its totient is φ = 1631424250.

The previous prime is 1631424233. The next prime is 1631424253. The reversal of 1631424251 is 1524241361.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1631424251 - 2⁶ = 1631424187 is a prime.

It is a super-2 number, since 2×1631424251² = 5323090173501822002, which contains 22 as substring.

Together with 1631424253, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (1631424253) 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, 815712125 + 815712126.

It is an arithmetic number, because the mean of its divisors is an integer number (815712126).

Almost surely, 2^1631424251 is an apocalyptic number.

1631424251 is a deficient number, since it is larger than the sum of its proper divisors (1).

1631424251 is an equidigital number, since it uses as much as digits as its factorization.

1631424251 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 5760, while the sum is 29.

The square root of 1631424251 is about 40390.8931691291. The cubic root of 1631424251 is about 1177.2145953256.

The spelling of 1631424251 in words is "one billion, six hundred thirty-one million, four hundred twenty-four thousand, two hundred fifty-one".