31134243769 has 2 divisors, whose sum is σ = 31134243770. Its totient is φ = 31134243768.

The previous prime is 31134243743. The next prime is 31134243821. The reversal of 31134243769 is 96734243113.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 18345348025 + 12788895744 = 135445^2 + 113088^2 .

It is an emirp because it is prime and its reverse (96734243113) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 31134243769 - 2¹⁵ = 31134211001 is a prime.

It is a super-2 number, since 2×31134243769² (a number of 22 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (31134243709) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15567121884 + 15567121885.

It is an arithmetic number, because the mean of its divisors is an integer number (15567121885).

Almost surely, 2^31134243769 is an apocalyptic number.

It is an amenable number.

31134243769 is a deficient number, since it is larger than the sum of its proper divisors (1).

31134243769 is an equidigital number, since it uses as much as digits as its factorization.

31134243769 is an evil number, because the sum of its binary digits is even.

The product of its digits is 326592, while the sum is 43.

The spelling of 31134243769 in words is "thirty-one billion, one hundred thirty-four million, two hundred forty-three thousand, seven hundred sixty-nine".