630629131 has 16 divisors (see below), whose sum is σ = 697010400. Its totient is φ = 570519840.

The previous prime is 630629123. The next prime is 630629137. The reversal of 630629131 is 131926036.

It is not a de Polignac number, because 630629131 - 2³ = 630629123 is a prime.

It is a super-2 number, since 2×630629131² = 795386201731630322, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 630629093 and 630629102.

It is not an unprimeable number, because it can be changed into a prime (630629137) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 303765 + ... + 305833.

It is an arithmetic number, because the mean of its divisors is an integer number (43563150).

Almost surely, 2^630629131 is an apocalyptic number.

630629131 is a deficient number, since it is larger than the sum of its proper divisors (66381269).

630629131 is a wasteful number, since it uses less digits than its factorization.

630629131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2331 (or 2309 counting only the distinct ones).

The product of its (nonzero) digits is 5832, while the sum is 31.

The square root of 630629131 is about 25112.3302582616. The cubic root of 630629131 is about 857.5471530990.

The spelling of 630629131 in words is "six hundred thirty million, six hundred twenty-nine thousand, one hundred thirty-one".