31123503343 has 2 divisors, whose sum is σ = 31123503344. Its totient is φ = 31123503342.

The previous prime is 31123503319. The next prime is 31123503347. The reversal of 31123503343 is 34330532113.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 31123503343 - 2⁵ = 31123503311 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (31123503347) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15561751671 + 15561751672.

It is an arithmetic number, because the mean of its divisors is an integer number (15561751672).

Almost surely, 2^31123503343 is an apocalyptic number.

31123503343 is a deficient number, since it is larger than the sum of its proper divisors (1).

31123503343 is an equidigital number, since it uses as much as digits as its factorization.

31123503343 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 9720, while the sum is 28.

The spelling of 31123503343 in words is "thirty-one billion, one hundred twenty-three million, five hundred three thousand, three hundred forty-three".