31679130 has 64 divisors (see below), whose sum is σ = 88351488. Its totient is φ = 7119360.

The previous prime is 31679129. The next prime is 31679147. The reversal of 31679130 is 3197613.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is an unprimeable number.

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 31 ways as a sum of consecutive naturals, for example, 11574 + ... + 14046.

It is an arithmetic number, because the mean of its divisors is an integer number (1380492).

Almost surely, 2^31679130 is an apocalyptic number.

31679130 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 31679130, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (44175744).

31679130 is an abundant number, since it is smaller than the sum of its proper divisors (56672358).

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

31679130 is a wasteful number, since it uses less digits than its factorization.

31679130 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2551.

The product of its (nonzero) digits is 3402, while the sum is 30.

The square root of 31679130 is about 5628.4216259978. The cubic root of 31679130 is about 316.4154992053.

The spelling of 31679130 in words is "thirty-one million, six hundred seventy-nine thousand, one hundred thirty".