31672632 has 64 divisors (see below), whose sum is σ = 84564000. Its totient is φ = 9850880.

The previous prime is 31672631. The next prime is 31672637. The reversal of 31672632 is 23627613.

It is a self number, because there is not a number n which added to its sum of digits gives 31672632.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31672631) 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, 60532 + ... + 61052.

Almost surely, 2^31672632 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 31672632, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (42282000).

31672632 is an abundant number, since it is smaller than the sum of its proper divisors (52891368).

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

31672632 is a wasteful number, since it uses less digits than its factorization.

31672632 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 696 (or 692 counting only the distinct ones).

The product of its digits is 9072, while the sum is 30.

The square root of 31672632 is about 5627.8443475277. The cubic root of 31672632 is about 316.3938634206.

The spelling of 31672632 in words is "thirty-one million, six hundred seventy-two thousand, six hundred thirty-two".