31113738 has 12 divisors (see below), whose sum is σ = 67413138. Its totient is φ = 10371240.

The previous prime is 31113713. The next prime is 31113749. The reversal of 31113738 is 83731113.

It can be written as a sum of positive squares in only one way, i.e., 24472809 + 6640929 = 4947^2 + 2577^2 .

It is a super-3 number, since 3×31113738³ (a number of 23 digits) contains 333 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 864253 + ... + 864288.

Almost surely, 2^31113738 is an apocalyptic number.

31113738 is an abundant number, since it is smaller than the sum of its proper divisors (36299400).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

31113738 is a wasteful number, since it uses less digits than its factorization.

31113738 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1728549 (or 1728546 counting only the distinct ones).

The product of its digits is 1512, while the sum is 27.

The square root of 31113738 is about 5577.9689852132. The cubic root of 31113738 is about 314.5217838133.

The spelling of 31113738 in words is "thirty-one million, one hundred thirteen thousand, seven hundred thirty-eight".