31120130 has 16 divisors (see below), whose sum is σ = 56238840. Its totient is φ = 12398592.

The previous prime is 31120121. The next prime is 31120153. The reversal of 31120130 is 3102113.

It can be written as a sum of positive squares in 4 ways, for example, as 29474041 + 1646089 = 5429^2 + 1283^2 .

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 7 ways as a sum of consecutive naturals, for example, 3485 + ... + 8624.

Almost surely, 2^31120130 is an apocalyptic number.

31120130 is a deficient number, since it is larger than the sum of its proper divisors (25118710).

31120130 is a wasteful number, since it uses less digits than its factorization.

31120130 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12373.

The product of its (nonzero) digits is 18, while the sum is 11.

The square root of 31120130 is about 5578.5419241949. The cubic root of 31120130 is about 314.5433207690.

Adding to 31120130 its reverse (3102113), we get a palindrome (34222243).

The spelling of 31120130 in words is "thirty-one million, one hundred twenty thousand, one hundred thirty".