345357431 has 4 divisors (see below), whose sum is σ = 365672592. Its totient is φ = 325042272.

The previous prime is 345357421. The next prime is 345357437. The reversal of 345357431 is 134753543.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-345357431 is a prime.

It is a super-2 number, since 2×345357431² = 238543510293839522, 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 = 345357391 and 345357400.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (345357437) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10157555 + ... + 10157588.

It is an arithmetic number, because the mean of its divisors is an integer number (91418148).

Almost surely, 2^345357431 is an apocalyptic number.

345357431 is a deficient number, since it is larger than the sum of its proper divisors (20315161).

345357431 is a wasteful number, since it uses less digits than its factorization.

345357431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20315160.

The product of its digits is 75600, while the sum is 35.

The square root of 345357431 is about 18583.7948492766. The cubic root of 345357431 is about 701.6000344708.

The spelling of 345357431 in words is "three hundred forty-five million, three hundred fifty-seven thousand, four hundred thirty-one".