332990331491 has 2 divisors, whose sum is σ = 332990331492. Its totient is φ = 332990331490.

The previous prime is 332990331463. The next prime is 332990331533. The reversal of 332990331491 is 194133099233.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 332990331491 - 2¹⁰ = 332990330467 is a prime.

It is a super-2 number, since 2×332990331491² (a number of 24 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (332990391491) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 166495165745 + 166495165746.

It is an arithmetic number, because the mean of its divisors is an integer number (166495165746).

Almost surely, 2^332990331491 is an apocalyptic number.

332990331491 is a deficient number, since it is larger than the sum of its proper divisors (1).

332990331491 is an equidigital number, since it uses as much as digits as its factorization.

332990331491 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 472392, while the sum is 47.

The spelling of 332990331491 in words is "three hundred thirty-two billion, nine hundred ninety million, three hundred thirty-one thousand, four hundred ninety-one".