31083040 has 24 divisors (see below), whose sum is σ = 73434060. Its totient is φ = 12433152.

The previous prime is 31083011. The next prime is 31083047. The reversal of 31083040 is 4038013.

It can be written as a sum of positive squares in 2 ways, for example, as 28686736 + 2396304 = 5356^2 + 1548^2 .

It is a junction number, because it is equal to n+sod(n) for n = 31082999 and 31083017.

It is not an unprimeable number, because it can be changed into a prime (31083047) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 96975 + ... + 97294.

Almost surely, 2^31083040 is an apocalyptic number.

It is an amenable number.

31083040 is an abundant number, since it is smaller than the sum of its proper divisors (42351020).

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

31083040 is a wasteful number, since it uses less digits than its factorization.

31083040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 194284 (or 194276 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 19.

The square root of 31083040 is about 5575.2165877211. The cubic root of 31083040 is about 314.4183100482.

The spelling of 31083040 in words is "thirty-one million, eighty-three thousand, forty".