31134517 has 2 divisors, whose sum is σ = 31134518. Its totient is φ = 31134516.

The previous prime is 31134469. The next prime is 31134529. The reversal of 31134517 is 71543113.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 24196561 + 6937956 = 4919^2 + 2634^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-31134517 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 31134491 and 31134500.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (31134577) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15567258 + 15567259.

It is an arithmetic number, because the mean of its divisors is an integer number (15567259).

Almost surely, 2^31134517 is an apocalyptic number.

It is an amenable number.

31134517 is a deficient number, since it is larger than the sum of its proper divisors (1).

31134517 is an equidigital number, since it uses as much as digits as its factorization.

31134517 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1260, while the sum is 25.

The square root of 31134517 is about 5579.8312698504. The cubic root of 31134517 is about 314.5917849792.

The spelling of 31134517 in words is "thirty-one million, one hundred thirty-four thousand, five hundred seventeen".