31134243709 has 2 divisors, whose sum is σ = 31134243710. Its totient is φ = 31134243708.

The previous prime is 31134243703. The next prime is 31134243713. The reversal of 31134243709 is 90734243113.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 21962350809 + 9171892900 = 148197^2 + 95770^2 .

It is a cyclic number.

It is not a de Polignac number, because 31134243709 - 2²⁹ = 30597372797 is a prime.

It is a super-2 number, since 2×31134243709² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (31134243703) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15567121854 + 15567121855.

It is an arithmetic number, because the mean of its divisors is an integer number (15567121855).

Almost surely, 2^31134243709 is an apocalyptic number.

It is an amenable number.

31134243709 is a deficient number, since it is larger than the sum of its proper divisors (1).

31134243709 is an equidigital number, since it uses as much as digits as its factorization.

31134243709 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 54432, while the sum is 37.

The spelling of 31134243709 in words is "thirty-one billion, one hundred thirty-four million, two hundred forty-three thousand, seven hundred nine".