31244129 has 8 divisors (see below), whose sum is σ = 35809920. Its totient is φ = 26703936.

The previous prime is 31244119. The next prime is 31244141. The reversal of 31244129 is 92144213.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a de Polignac number, because none of the positive numbers 2^k-31244129 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 31244098 and 31244107.

It is not an unprimeable number, because it can be changed into a prime (31244119) 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, 3704 + ... + 8729.

It is an arithmetic number, because the mean of its divisors is an integer number (4476240).

Almost surely, 2^31244129 is an apocalyptic number.

It is an amenable number.

31244129 is a deficient number, since it is larger than the sum of its proper divisors (4565791).

31244129 is a wasteful number, since it uses less digits than its factorization.

31244129 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12799.

The product of its digits is 1728, while the sum is 26.

The square root of 31244129 is about 5589.6448008796. The cubic root of 31244129 is about 314.9605359144.

The spelling of 31244129 in words is "thirty-one million, two hundred forty-four thousand, one hundred twenty-nine".