31630242621 has 8 divisors (see below), whose sum is σ = 42323742144. Its totient is φ = 21011785760.

The previous prime is 31630242601. The next prime is 31630242629. The reversal of 31630242621 is 12624203613.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 31630242621 - 2¹³ = 31630234429 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31630242629) 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, 18759681 + ... + 18761366.

It is an arithmetic number, because the mean of its divisors is an integer number (5290467768).

Almost surely, 2^31630242621 is an apocalyptic number.

It is an amenable number.

31630242621 is a deficient number, since it is larger than the sum of its proper divisors (10693499523).

31630242621 is a wasteful number, since it uses less digits than its factorization.

31630242621 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37521331.

The product of its (nonzero) digits is 10368, while the sum is 30.

The spelling of 31630242621 in words is "thirty-one billion, six hundred thirty million, two hundred forty-two thousand, six hundred twenty-one".