631002132 has 36 divisors (see below), whose sum is σ = 1596198240. Its totient is φ = 210180432.

The previous prime is 631002089. The next prime is 631002137. The reversal of 631002132 is 231200136.

631002132 is a `hidden beast` number, since 631 + 0 + 0 + 2 + 1 + 32 = 666.

It is a tau number, because it is divible by the number of its divisors (36).

It is a super-4 number, since 4×631002132⁴ (a number of 36 digits) contains 4444 as substring.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (631002137) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 50503 + ... + 61745.

It is an arithmetic number, because the mean of its divisors is an integer number (44338840).

Almost surely, 2^631002132 is an apocalyptic number.

It is an amenable number.

631002132 is an abundant number, since it is smaller than the sum of its proper divisors (965196108).

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

631002132 is a wasteful number, since it uses less digits than its factorization.

631002132 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12812 (or 12807 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 18.

The square root of 631002132 is about 25119.7558109150. The cubic root of 631002132 is about 857.7161921778.

Adding to 631002132 its reverse (231200136), we get a palindrome (862202268).

The spelling of 631002132 in words is "six hundred thirty-one million, two thousand, one hundred thirty-two".