322920131 has 2 divisors, whose sum is σ = 322920132. Its totient is φ = 322920130.

The previous prime is 322920113. The next prime is 322920137. The reversal of 322920131 is 131029223.

Together with previous prime (322920113) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-322920131 is a prime.

It is a super-2 number, since 2×322920131² = 208554822010114322, which contains 22 as substring.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 322920097 and 322920106.

It is not a weakly prime, because it can be changed into another prime (322920137) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 161460065 + 161460066.

It is an arithmetic number, because the mean of its divisors is an integer number (161460066).

Almost surely, 2^322920131 is an apocalyptic number.

322920131 is a deficient number, since it is larger than the sum of its proper divisors (1).

322920131 is an equidigital number, since it uses as much as digits as its factorization.

322920131 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 648, while the sum is 23.

The square root of 322920131 is about 17969.9786032149. The cubic root of 322920131 is about 686.0646459661.

Adding to 322920131 its reverse (131029223), we get a palindrome (453949354).

The spelling of 322920131 in words is "three hundred twenty-two million, nine hundred twenty thousand, one hundred thirty-one".