31254130 has 16 divisors (see below), whose sum is σ = 56891160. Its totient is φ = 12360832.

The previous prime is 31254121. The next prime is 31254133. The reversal of 31254130 is 3145213.

It can be written as a sum of positive squares in 4 ways, for example, as 8814961 + 22439169 = 2969^2 + 4737^2 .

It is a junction number, because it is equal to n+sod(n) for n = 31254098 and 31254107.

It is not an unprimeable number, because it can be changed into a prime (31254133) 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, 16669 + ... + 18448.

Almost surely, 2^31254130 is an apocalyptic number.

31254130 is a deficient number, since it is larger than the sum of its proper divisors (25637030).

31254130 is a wasteful number, since it uses less digits than its factorization.

31254130 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35213.

The product of its (nonzero) digits is 360, while the sum is 19.

The square root of 31254130 is about 5590.5393299752. The cubic root of 31254130 is about 314.9941377930.

Adding to 31254130 its reverse (3145213), we get a palindrome (34399343).

The spelling of 31254130 in words is "thirty-one million, two hundred fifty-four thousand, one hundred thirty".