326109431 has 2 divisors, whose sum is σ = 326109432. Its totient is φ = 326109430.

The previous prime is 326109409. The next prime is 326109451. The reversal of 326109431 is 134901623.

It is a strong prime.

It is an emirp because it is prime and its reverse (134901623) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 326109431 - 2²² = 321915127 is a prime.

It is a super-2 number, since 2×326109431² = 212694721974287522, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 326109394 and 326109403.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (326109401) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 163054715 + 163054716.

It is an arithmetic number, because the mean of its divisors is an integer number (163054716).

Almost surely, 2^326109431 is an apocalyptic number.

326109431 is a deficient number, since it is larger than the sum of its proper divisors (1).

326109431 is an equidigital number, since it uses as much as digits as its factorization.

326109431 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3888, while the sum is 29.

The square root of 326109431 is about 18058.5002422682. The cubic root of 326109431 is about 688.3158752960.

The spelling of 326109431 in words is "three hundred twenty-six million, one hundred nine thousand, four hundred thirty-one".