31930101 has 24 divisors (see below), whose sum is σ = 52891904. Its totient is φ = 18182880.

The previous prime is 31930099. The next prime is 31930109. The reversal of 31930101 is 10103913.

It is not a de Polignac number, because 31930101 - 2¹ = 31930099 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31930109) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 22431 + ... + 23811.

Almost surely, 2^31930101 is an apocalyptic number.

It is an amenable number.

31930101 is a deficient number, since it is larger than the sum of its proper divisors (20961803).

31930101 is a wasteful number, since it uses less digits than its factorization.

31930101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1761 (or 1758 counting only the distinct ones).

The product of its (nonzero) digits is 81, while the sum is 18.

The square root of 31930101 is about 5650.6726148309. The cubic root of 31930101 is about 317.2488799056.

The spelling of 31930101 in words is "thirty-one million, nine hundred thirty thousand, one hundred one".