631429000 has 32 divisors (see below), whose sum is σ = 1477546200. Its totient is φ = 252571200.

The previous prime is 631428997. The next prime is 631429003. The reversal of 631429000 is 924136.

It is an interprime number because it is at equal distance from previous prime (631428997) and next prime (631429003).

It can be written as a sum of positive squares in 4 ways, for example, as 186978276 + 444450724 = 13674^2 + 21082^2 .

It is a Harshad number since it is a multiple of its sum of digits (25).

It is not an unprimeable number, because it can be changed into a prime (631429003) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 314715 + ... + 316714.

Almost surely, 2^631429000 is an apocalyptic number.

It is an amenable number.

631429000 is an abundant number, since it is smaller than the sum of its proper divisors (846117200).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

631429000 is a wasteful number, since it uses less digits than its factorization.

631429000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 631450 (or 631436 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 25.

The square root of 631429000 is about 25128.2510334484. The cubic root of 631429000 is about 857.9095613421.

The spelling of 631429000 in words is "six hundred thirty-one million, four hundred twenty-nine thousand".