351223007 has 4 divisors (see below), whose sum is σ = 351267336. Its totient is φ = 351178680.

The previous prime is 351223001. The next prime is 351223021. The reversal of 351223007 is 700322153.

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, and also an emirpimes, since its reverse is a distinct semiprime: 700322153 = 59 ⋅11869867.

It is a cyclic number.

It is not a de Polignac number, because 351223007 - 2²⁰ = 350174431 is a prime.

It is a super-2 number, since 2×351223007² = 246715201292244098, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (351223001) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6668 + ... + 27329.

It is an arithmetic number, because the mean of its divisors is an integer number (87816834).

Almost surely, 2^351223007 is an apocalyptic number.

351223007 is a deficient number, since it is larger than the sum of its proper divisors (44329).

351223007 is a wasteful number, since it uses less digits than its factorization.

351223007 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44328.

The product of its (nonzero) digits is 1260, while the sum is 23.

The square root of 351223007 is about 18740.9446666917. The cubic root of 351223007 is about 705.5497661689.

The spelling of 351223007 in words is "three hundred fifty-one million, two hundred twenty-three thousand, seven".