31672377 has 72 divisors (see below), whose sum is σ = 56320992. Its totient is φ = 17625600.

The previous prime is 31672369. The next prime is 31672387. The reversal of 31672377 is 77327613.

It is not a de Polignac number, because 31672377 - 2³ = 31672369 is a prime.

It is a nialpdrome in base 9.

It is not an unprimeable number, because it can be changed into a prime (31672337) by changing a digit.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 772477 + ... + 772517.

It is an arithmetic number, because the mean of its divisors is an integer number (782236).

Almost surely, 2^31672377 is an apocalyptic number.

It is an amenable number.

31672377 is a deficient number, since it is larger than the sum of its proper divisors (24648615).

31672377 is a wasteful number, since it uses less digits than its factorization.

31672377 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 101 (or 72 counting only the distinct ones).

The product of its digits is 37044, while the sum is 36.

The square root of 31672377 is about 5627.8216922714. The cubic root of 31672377 is about 316.3930143105.

The spelling of 31672377 in words is "thirty-one million, six hundred seventy-two thousand, three hundred seventy-seven".