16433256316231 has 2 divisors, whose sum is σ = 16433256316232. Its totient is φ = 16433256316230.

The previous prime is 16433256316171. The next prime is 16433256316259. The reversal of 16433256316231 is 13261365233461.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 16433256316231 - 2¹⁵ = 16433256283463 is a prime.

It is a super-2 number, since 2×16433256316231² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (16433256316031) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8216628158115 + 8216628158116.

It is an arithmetic number, because the mean of its divisors is an integer number (8216628158116).

Almost surely, 2^{16433256316231} is an apocalyptic number.

16433256316231 is a deficient number, since it is larger than the sum of its proper divisors (1).

16433256316231 is an equidigital number, since it uses as much as digits as its factorization.

16433256316231 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1399680, while the sum is 46.

The spelling of 16433256316231 in words is "sixteen trillion, four hundred thirty-three billion, two hundred fifty-six million, three hundred sixteen thousand, two hundred thirty-one".