214578791431 has 2 divisors, whose sum is σ = 214578791432. Its totient is φ = 214578791430.

The previous prime is 214578791347. The next prime is 214578791437. The reversal of 214578791431 is 134197875412.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 214578791431 - 2⁷ = 214578791303 is a prime.

It is a super-2 number, since 2×214578791431² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (214578791437) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 107289395715 + 107289395716.

It is an arithmetic number, because the mean of its divisors is an integer number (107289395716).

Almost surely, 2^214578791431 is an apocalyptic number.

214578791431 is a deficient number, since it is larger than the sum of its proper divisors (1).

214578791431 is an equidigital number, since it uses as much as digits as its factorization.

214578791431 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1693440, while the sum is 52.

It can be divided in two parts, 214578 and 791431, that added together give a square (1006009 = 1003²).

The spelling of 214578791431 in words is "two hundred fourteen billion, five hundred seventy-eight million, seven hundred ninety-one thousand, four hundred thirty-one".