31134649 has 24 divisors (see below), whose sum is σ = 40088328. Its totient is φ = 23950080.

The previous prime is 31134643. The next prime is 31134659. The reversal of 31134649 is 94643113.

It can be written as a sum of positive squares in 4 ways, for example, as 12299049 + 18835600 = 3507^2 + 4340^2 .

It is not a de Polignac number, because 31134649 - 2³ = 31134641 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 31134649.

It is not an unprimeable number, because it can be changed into a prime (31134641) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 22909 + ... + 24229.

It is an arithmetic number, because the mean of its divisors is an integer number (1670347).

Almost surely, 2^31134649 is an apocalyptic number.

It is an amenable number.

31134649 is a deficient number, since it is larger than the sum of its proper divisors (8953679).

31134649 is a wasteful number, since it uses less digits than its factorization.

31134649 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1385 (or 1378 counting only the distinct ones).

The product of its digits is 7776, while the sum is 31.

The square root of 31134649 is about 5579.8430981525. The cubic root of 31134649 is about 314.5922295668.

The spelling of 31134649 in words is "thirty-one million, one hundred thirty-four thousand, six hundred forty-nine".