345351431 has 4 divisors (see below), whose sum is σ = 345395232. Its totient is φ = 345307632.

The previous prime is 345351427. The next prime is 345351449. The reversal of 345351431 is 134153543.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 345351431 - 2² = 345351427 is a prime.

It is a super-2 number, since 2×345351431² = 238535221787495522, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 345351394 and 345351403.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (345351631) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6431 + ... + 27056.

It is an arithmetic number, because the mean of its divisors is an integer number (86348808).

Almost surely, 2^345351431 is an apocalyptic number.

345351431 is a deficient number, since it is larger than the sum of its proper divisors (43801).

345351431 is a wasteful number, since it uses less digits than its factorization.

345351431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43800.

The product of its digits is 10800, while the sum is 29.

The square root of 345351431 is about 18583.6334176070. The cubic root of 345351431 is about 701.5959714101.

The spelling of 345351431 in words is "three hundred forty-five million, three hundred fifty-one thousand, four hundred thirty-one".