31998453274 has 16 divisors (see below), whose sum is σ = 48152811168. Its totient is φ = 15947564112.

The previous prime is 31998453251. The next prime is 31998453293. The reversal of 31998453274 is 47235489913.

It is a super-2 number, since 2×31998453274² (a number of 22 digits) contains 22 as substring.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 1471509 + ... + 1493095.

It is an arithmetic number, because the mean of its divisors is an integer number (3009550698).

Almost surely, 2^31998453274 is an apocalyptic number.

31998453274 is a deficient number, since it is larger than the sum of its proper divisors (16154357894).

31998453274 is a wasteful number, since it uses less digits than its factorization.

31998453274 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23949.

The product of its digits is 6531840, while the sum is 55.

The spelling of 31998453274 in words is "thirty-one billion, nine hundred ninety-eight million, four hundred fifty-three thousand, two hundred seventy-four".