31129652 has 12 divisors (see below), whose sum is σ = 57681540. Its totient is φ = 14649216.

The previous prime is 31129627. The next prime is 31129663. The reversal of 31129652 is 25692113.

It can be written as a sum of positive squares in 2 ways, for example, as 12432676 + 18696976 = 3526^2 + 4324^2 .

It is a super-2 number, since 2×31129652² = 1938110467282208, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 228827 + ... + 228962.

It is an arithmetic number, because the mean of its divisors is an integer number (4806795).

Almost surely, 2^31129652 is an apocalyptic number.

It is an amenable number.

31129652 is a deficient number, since it is larger than the sum of its proper divisors (26551888).

31129652 is a wasteful number, since it uses less digits than its factorization.

31129652 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 457810 (or 457808 counting only the distinct ones).

The product of its digits is 3240, while the sum is 29.

The square root of 31129652 is about 5579.3953077372. The cubic root of 31129652 is about 314.5753983564.

The spelling of 31129652 in words is "thirty-one million, one hundred twenty-nine thousand, six hundred fifty-two".