31016825449 has 2 divisors, whose sum is σ = 31016825450. Its totient is φ = 31016825448.

The previous prime is 31016825407. The next prime is 31016825461. The reversal of 31016825449 is 94452861013.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 28365296400 + 2651529049 = 168420^2 + 51493^2 .

It is a cyclic number.

It is not a de Polignac number, because 31016825449 - 2⁷ = 31016825321 is a prime.

It is not a weakly prime, because it can be changed into another prime (31016828449) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15508412724 + 15508412725.

It is an arithmetic number, because the mean of its divisors is an integer number (15508412725).

Almost surely, 2^31016825449 is an apocalyptic number.

It is an amenable number.

31016825449 is a deficient number, since it is larger than the sum of its proper divisors (1).

31016825449 is an equidigital number, since it uses as much as digits as its factorization.

31016825449 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 207360, while the sum is 43.

The spelling of 31016825449 in words is "thirty-one billion, sixteen million, eight hundred twenty-five thousand, four hundred forty-nine".