345222731 has 8 divisors (see below), whose sum is σ = 398371584. Its totient is φ = 293031720.

The previous prime is 345222721. The next prime is 345222733. The reversal of 345222731 is 137222543.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 345222731 - 2⁶ = 345222667 is a prime.

It is a super-2 number, since 2×345222731² = 238357467998196722, 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 = 345222694 and 345222703.

It is not an unprimeable number, because it can be changed into a prime (345222733) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 238685 + ... + 240126.

It is an arithmetic number, because the mean of its divisors is an integer number (49796448).

Almost surely, 2^345222731 is an apocalyptic number.

345222731 is a deficient number, since it is larger than the sum of its proper divisors (53148853).

345222731 is a wasteful number, since it uses less digits than its factorization.

345222731 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 478921.

The product of its digits is 10080, while the sum is 29.

The square root of 345222731 is about 18580.1703705859. The cubic root of 345222731 is about 701.5088074255.

The spelling of 345222731 in words is "three hundred forty-five million, two hundred twenty-two thousand, seven hundred thirty-one".