331413431 has 2 divisors, whose sum is σ = 331413432. Its totient is φ = 331413430.

The previous prime is 331413389. The next prime is 331413449. The reversal of 331413431 is 134314133.

It is a strong prime.

It is an emirp because it is prime and its reverse (134314133) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-331413431 is a prime.

It is a super-2 number, since 2×331413431² = 219669724494383522, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 331413397 and 331413406.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (331413461) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 165706715 + 165706716.

It is an arithmetic number, because the mean of its divisors is an integer number (165706716).

Almost surely, 2^331413431 is an apocalyptic number.

331413431 is a deficient number, since it is larger than the sum of its proper divisors (1).

331413431 is an equidigital number, since it uses as much as digits as its factorization.

331413431 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1296, while the sum is 23.

The square root of 331413431 is about 18204.7639644133. The cubic root of 331413431 is about 692.0275244657.

Adding to 331413431 its reverse (134314133), we get a palindrome (465727564).

The spelling of 331413431 in words is "three hundred thirty-one million, four hundred thirteen thousand, four hundred thirty-one".