31880157 has 16 divisors (see below), whose sum is σ = 45788160. Its totient is φ = 19665072.

The previous prime is 31880131. The next prime is 31880161. The reversal of 31880157 is 75108813.

It is not a de Polignac number, because 31880157 - 2¹⁴ = 31863773 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31880257) 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 15 ways as a sum of consecutive naturals, for example, 4053 + ... + 8954.

It is an arithmetic number, because the mean of its divisors is an integer number (2861760).

Almost surely, 2^31880157 is an apocalyptic number.

It is an amenable number.

31880157 is a deficient number, since it is larger than the sum of its proper divisors (13908003).

31880157 is a wasteful number, since it uses less digits than its factorization.

31880157 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13072.

The product of its (nonzero) digits is 6720, while the sum is 33.

The square root of 31880157 is about 5646.2515884434. The cubic root of 31880157 is about 317.0833835454.

The spelling of 31880157 in words is "thirty-one million, eight hundred eighty thousand, one hundred fifty-seven".