31790130 has 16 divisors (see below), whose sum is σ = 76296384. Its totient is φ = 8477360.

The previous prime is 31790111. The next prime is 31790167. The reversal of 31790130 is 3109713.

It is a super-2 number, since 2×31790130² = 2021224730833800, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 31790130.

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 7 ways as a sum of consecutive naturals, for example, 529806 + ... + 529865.

It is an arithmetic number, because the mean of its divisors is an integer number (4768524).

Almost surely, 2^31790130 is an apocalyptic number.

31790130 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

31790130 is an abundant number, since it is smaller than the sum of its proper divisors (44506254).

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

31790130 is a wasteful number, since it uses less digits than its factorization.

31790130 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1059681.

The product of its (nonzero) digits is 567, while the sum is 24.

The square root of 31790130 is about 5638.2736719673. The cubic root of 31790130 is about 316.7846294897.

Adding to 31790130 its reverse (3109713), we get a palindrome (34899843).

The spelling of 31790130 in words is "thirty-one million, seven hundred ninety thousand, one hundred thirty".