31124897 has 2 divisors, whose sum is σ = 31124898. Its totient is φ = 31124896.

The previous prime is 31124861. The next prime is 31124921. The reversal of 31124897 is 79842113.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 23775376 + 7349521 = 4876^2 + 2711^2 .

It is a cyclic number.

It is not a de Polignac number, because 31124897 - 2¹⁴ = 31108513 is a prime.

It is not a weakly prime, because it can be changed into another prime (31124827) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15562448 + 15562449.

It is an arithmetic number, because the mean of its divisors is an integer number (15562449).

Almost surely, 2^31124897 is an apocalyptic number.

It is an amenable number.

31124897 is a deficient number, since it is larger than the sum of its proper divisors (1).

31124897 is an equidigital number, since it uses as much as digits as its factorization.

31124897 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 12096, while the sum is 35.

The square root of 31124897 is about 5578.9691700170. The cubic root of 31124897 is about 314.5593805932.

The spelling of 31124897 in words is "thirty-one million, one hundred twenty-four thousand, eight hundred ninety-seven".