31540044017 has 2 divisors, whose sum is σ = 31540044018. Its totient is φ = 31540044016.

The previous prime is 31540043959. The next prime is 31540044059. The reversal of 31540044017 is 71044004513.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 17951712256 + 13588331761 = 133984^2 + 116569^2 .

It is a cyclic number.

It is not a de Polignac number, because 31540044017 - 2¹⁰ = 31540042993 is a prime.

It is not a weakly prime, because it can be changed into another prime (31540044097) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15770022008 + 15770022009.

It is an arithmetic number, because the mean of its divisors is an integer number (15770022009).

Almost surely, 2^31540044017 is an apocalyptic number.

It is an amenable number.

31540044017 is a deficient number, since it is larger than the sum of its proper divisors (1).

31540044017 is an equidigital number, since it uses as much as digits as its factorization.

31540044017 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6720, while the sum is 29.

The spelling of 31540044017 in words is "thirty-one billion, five hundred forty million, forty-four thousand, seventeen".