31988314 has 4 divisors (see below), whose sum is σ = 47982474. Its totient is φ = 15994156.

The previous prime is 31988251. The next prime is 31988321. The reversal of 31988314 is 41388913.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 41388913 = 59 ⋅701507.

It can be written as a sum of positive squares in only one way, i.e., 26347689 + 5640625 = 5133^2 + 2375^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7997077 + ... + 7997080.

Almost surely, 2^31988314 is an apocalyptic number.

31988314 is a deficient number, since it is larger than the sum of its proper divisors (15994160).

31988314 is a wasteful number, since it uses less digits than its factorization.

31988314 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15994159.

The product of its digits is 20736, while the sum is 37.

The square root of 31988314 is about 5655.8212489434. The cubic root of 31988314 is about 317.4415590868.

The spelling of 31988314 in words is "thirty-one million, nine hundred eighty-eight thousand, three hundred fourteen".