31830072343 has 2 divisors, whose sum is σ = 31830072344. Its totient is φ = 31830072342.

The previous prime is 31830072311. The next prime is 31830072367. The reversal of 31830072343 is 34327003813.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 31830072343 - 2⁵ = 31830072311 is a prime.

It is a super-2 number, since 2×31830072343² (a number of 22 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 31830072299 and 31830072308.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (31830072643) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15915036171 + 15915036172.

It is an arithmetic number, because the mean of its divisors is an integer number (15915036172).

Almost surely, 2^31830072343 is an apocalyptic number.

31830072343 is a deficient number, since it is larger than the sum of its proper divisors (1).

31830072343 is an equidigital number, since it uses as much as digits as its factorization.

31830072343 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 36288, while the sum is 34.

The spelling of 31830072343 in words is "thirty-one billion, eight hundred thirty million, seventy-two thousand, three hundred forty-three".