31707745343 has 2 divisors, whose sum is σ = 31707745344. Its totient is φ = 31707745342.

The previous prime is 31707745339. The next prime is 31707745369. The reversal of 31707745343 is 34354770713.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 31707745343 - 2² = 31707745339 is a prime.

It is a super-2 number, since 2×31707745343² (a number of 22 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 31707745294 and 31707745303.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (31707745543) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15853872671 + 15853872672.

It is an arithmetic number, because the mean of its divisors is an integer number (15853872672).

Almost surely, 2^31707745343 is an apocalyptic number.

31707745343 is a deficient number, since it is larger than the sum of its proper divisors (1).

31707745343 is an equidigital number, since it uses as much as digits as its factorization.

31707745343 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 740880, while the sum is 44.

The spelling of 31707745343 in words is "thirty-one billion, seven hundred seven million, seven hundred forty-five thousand, three hundred forty-three".