331234412491 has 2 divisors, whose sum is σ = 331234412492. Its totient is φ = 331234412490.

The previous prime is 331234412473. The next prime is 331234412501. The reversal of 331234412491 is 194214432133.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 331234412491 - 2²⁹ = 330697541579 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 331234412491.

It is not a weakly prime, because it can be changed into another prime (331234412591) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 165617206245 + 165617206246.

It is an arithmetic number, because the mean of its divisors is an integer number (165617206246).

Almost surely, 2^331234412491 is an apocalyptic number.

331234412491 is a deficient number, since it is larger than the sum of its proper divisors (1).

331234412491 is an equidigital number, since it uses as much as digits as its factorization.

331234412491 is an evil number, because the sum of its binary digits is even.

The product of its digits is 62208, while the sum is 37.

The spelling of 331234412491 in words is "three hundred thirty-one billion, two hundred thirty-four million, four hundred twelve thousand, four hundred ninety-one".