31449380593 has 2 divisors, whose sum is σ = 31449380594. Its totient is φ = 31449380592.

The previous prime is 31449380581. The next prime is 31449380597. The reversal of 31449380593 is 39508394413.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 28167580224 + 3281800369 = 167832^2 + 57287^2 .

It is a cyclic number.

It is not a de Polignac number, because 31449380593 - 2²⁹ = 30912509681 is a prime.

It is not a weakly prime, because it can be changed into another prime (31449380597) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15724690296 + 15724690297.

It is an arithmetic number, because the mean of its divisors is an integer number (15724690297).

Almost surely, 2^31449380593 is an apocalyptic number.

It is an amenable number.

31449380593 is a deficient number, since it is larger than the sum of its proper divisors (1).

31449380593 is an equidigital number, since it uses as much as digits as its factorization.

31449380593 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1399680, while the sum is 49.

The spelling of 31449380593 in words is "thirty-one billion, four hundred forty-nine million, three hundred eighty thousand, five hundred ninety-three".