31948977 has 8 divisors (see below), whose sum is σ = 42761664. Its totient is φ = 21217808.

The previous prime is 31948951. The next prime is 31948991. The reversal of 31948977 is 77984913.

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 31948977 - 2¹⁸ = 31686833 is a prime.

It is not an unprimeable number, because it can be changed into a prime (31948907) 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, 19458 + ... + 21035.

It is an arithmetic number, because the mean of its divisors is an integer number (5345208).

Almost surely, 2^31948977 is an apocalyptic number.

It is an amenable number.

31948977 is a deficient number, since it is larger than the sum of its proper divisors (10812687).

31948977 is a wasteful number, since it uses less digits than its factorization.

31948977 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40759.

The product of its digits is 381024, while the sum is 48.

The square root of 31948977 is about 5652.3426116965. The cubic root of 31948977 is about 317.3113832072.

The spelling of 31948977 in words is "thirty-one million, nine hundred forty-eight thousand, nine hundred seventy-seven".