345963931 has 2 divisors, whose sum is σ = 345963932. Its totient is φ = 345963930.

The previous prime is 345963883. The next prime is 345963941. The reversal of 345963931 is 139369543.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 345963931 - 2⁷ = 345963803 is a prime.

It is a super-2 number, since 2×345963931² = 239382083105945522, which contains 22 as substring.

It is equal to p_18598354 and since 345963931 and 18598354 have the same sum of digits, it is a Honaker prime.

It is not a weakly prime, because it can be changed into another prime (345963941) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 172981965 + 172981966.

It is an arithmetic number, because the mean of its divisors is an integer number (172981966).

Almost surely, 2^345963931 is an apocalyptic number.

345963931 is a deficient number, since it is larger than the sum of its proper divisors (1).

345963931 is an equidigital number, since it uses as much as digits as its factorization.

345963931 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 262440, while the sum is 43.

The square root of 345963931 is about 18600.1056717428. The cubic root of 345963931 is about 702.0104996225.

The spelling of 345963931 in words is "three hundred forty-five million, nine hundred sixty-three thousand, nine hundred thirty-one".