31134661 has 6 divisors (see below), whose sum is σ = 32246162. Its totient is φ = 30060240.

The previous prime is 31134659. The next prime is 31134671. The reversal of 31134661 is 16643113.

It is a happy number.

It can be written as a sum of positive squares in 3 ways, for example, as 950625 + 30184036 = 975^2 + 5494^2 .

It is not a de Polignac number, because 31134661 - 2¹ = 31134659 is a prime.

It is a Duffinian number.

It is a congruent number.

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 5 ways as a sum of consecutive naturals, for example, 17670 + ... + 19351.

Almost surely, 2^31134661 is an apocalyptic number.

It is an amenable number.

31134661 is a deficient number, since it is larger than the sum of its proper divisors (1111501).

31134661 is an equidigital number, since it uses as much as digits as its factorization.

31134661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37079 (or 37050 counting only the distinct ones).

The product of its digits is 1296, while the sum is 25.

The square root of 31134661 is about 5579.8441734514. The cubic root of 31134661 is about 314.5922699838.

Adding to 31134661 its reverse (16643113), we get a palindrome (47777774).

The spelling of 31134661 in words is "thirty-one million, one hundred thirty-four thousand, six hundred sixty-one".