31376744369 has 2 divisors, whose sum is σ = 31376744370. Its totient is φ = 31376744368.

The previous prime is 31376744317. The next prime is 31376744383. The reversal of 31376744369 is 96344767313.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 20588806144 + 10787938225 = 143488^2 + 103865^2 .

It is a cyclic number.

It is not a de Polignac number, because 31376744369 - 2¹⁶ = 31376678833 is a prime.

It is a super-2 number, since 2×31376744369² (a number of 22 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 31376744369.

It is not a weakly prime, because it can be changed into another prime (31376744309) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15688372184 + 15688372185.

It is an arithmetic number, because the mean of its divisors is an integer number (15688372185).

Almost surely, 2^31376744369 is an apocalyptic number.

It is an amenable number.

31376744369 is a deficient number, since it is larger than the sum of its proper divisors (1).

31376744369 is an equidigital number, since it uses as much as digits as its factorization.

31376744369 is an evil number, because the sum of its binary digits is even.

The product of its digits is 6858432, while the sum is 53.

The spelling of 31376744369 in words is "thirty-one billion, three hundred seventy-six million, seven hundred forty-four thousand, three hundred sixty-nine".