31068930 has 16 divisors (see below), whose sum is σ = 74565504. Its totient is φ = 8285040.

The previous prime is 31068907. The next prime is 31068931. The reversal of 31068930 is 3986013.

It is a super-2 number, since 2×31068930² = 1930556822689800, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (30), and also a Moran number because the ratio is a prime number: 1035631 = 31068930 / (3 + 1 + 0 + 6 + 8 + 9 + 3 + 0).

It is not an unprimeable number, because it can be changed into a prime (31068931) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 517786 + ... + 517845.

It is an arithmetic number, because the mean of its divisors is an integer number (4660344).

Almost surely, 2^31068930 is an apocalyptic number.

31068930 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

31068930 is an abundant number, since it is smaller than the sum of its proper divisors (43496574).

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

31068930 is a wasteful number, since it uses less digits than its factorization.

31068930 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1035641.

The product of its (nonzero) digits is 3888, while the sum is 30.

The square root of 31068930 is about 5573.9510223898. The cubic root of 31068930 is about 314.3707266091.

The spelling of 31068930 in words is "thirty-one million, sixty-eight thousand, nine hundred thirty".