345560431 has 2 divisors, whose sum is σ = 345560432. Its totient is φ = 345560430.

The previous prime is 345560393. The next prime is 345560461. The reversal of 345560431 is 134065543.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 345560431 - 2²⁵ = 312005999 is a prime.

It is a super-2 number, since 2×345560431² = 238824022945811522, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 345560393 and 345560402.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (345560461) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 172780215 + 172780216.

It is an arithmetic number, because the mean of its divisors is an integer number (172780216).

Almost surely, 2^345560431 is an apocalyptic number.

345560431 is a deficient number, since it is larger than the sum of its proper divisors (1).

345560431 is an equidigital number, since it uses as much as digits as its factorization.

345560431 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 21600, while the sum is 31.

The square root of 345560431 is about 18589.2557946788. The cubic root of 345560431 is about 701.7374736355.

The spelling of 345560431 in words is "three hundred forty-five million, five hundred sixty thousand, four hundred thirty-one".