31268130 has 16 divisors (see below), whose sum is σ = 75043584. Its totient is φ = 8338160.

The previous prime is 31268099. The next prime is 31268137. The reversal of 31268130 is 3186213.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 31268130.

It is not an unprimeable number, because it can be changed into a prime (31268137) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 521106 + ... + 521165.

It is an arithmetic number, because the mean of its divisors is an integer number (4690224).

Almost surely, 2^31268130 is an apocalyptic number.

31268130 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

31268130 is an abundant number, since it is smaller than the sum of its proper divisors (43775454).

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

31268130 is a wasteful number, since it uses less digits than its factorization.

31268130 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1042281.

The product of its (nonzero) digits is 864, while the sum is 24.

The square root of 31268130 is about 5591.7913051186. The cubic root of 31268130 is about 315.0411636808.

The spelling of 31268130 in words is "thirty-one million, two hundred sixty-eight thousand, one hundred thirty".