164343931 has 2 divisors, whose sum is σ = 164343932. Its totient is φ = 164343930.

The previous prime is 164343919. The next prime is 164343941. The reversal of 164343931 is 139343461.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 164343931 - 2¹³ = 164335739 is a prime.

It is a super-2 number, since 2×164343931² = 54017855313065522, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (164343941) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 82171965 + 82171966.

It is an arithmetic number, because the mean of its divisors is an integer number (82171966).

Almost surely, 2^164343931 is an apocalyptic number.

164343931 is a deficient number, since it is larger than the sum of its proper divisors (1).

164343931 is an equidigital number, since it uses as much as digits as its factorization.

164343931 is an evil number, because the sum of its binary digits is even.

The product of its digits is 23328, while the sum is 34.

The square root of 164343931 is about 12819.6696915326. The cubic root of 164343931 is about 547.7527377849.

The spelling of 164343931 in words is "one hundred sixty-four million, three hundred forty-three thousand, nine hundred thirty-one".