629946131 has 2 divisors, whose sum is σ = 629946132. Its totient is φ = 629946130.

The previous prime is 629946113. The next prime is 629946157. The reversal of 629946131 is 131649926.

Together with previous prime (629946113) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 629946131 - 2¹⁸ = 629683987 is a prime.

It is a super-2 number, since 2×629946131² = 793664255923738322, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (629946631) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 314973065 + 314973066.

It is an arithmetic number, because the mean of its divisors is an integer number (314973066).

Almost surely, 2^629946131 is an apocalyptic number.

629946131 is a deficient number, since it is larger than the sum of its proper divisors (1).

629946131 is an equidigital number, since it uses as much as digits as its factorization.

629946131 is an evil number, because the sum of its binary digits is even.

The product of its digits is 69984, while the sum is 41.

The square root of 629946131 is about 25098.7276769162. The cubic root of 629946131 is about 857.2374537568.

The spelling of 629946131 in words is "six hundred twenty-nine million, nine hundred forty-six thousand, one hundred thirty-one".