344509431 has 16 divisors (see below), whose sum is σ = 525561600. Its totient is φ = 196639488.

The previous prime is 344509423. The next prime is 344509447. The reversal of 344509431 is 134905443.

It is not a de Polignac number, because 344509431 - 2³ = 344509423 is a prime.

It is a super-2 number, since 2×344509431² = 237373496095887522, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 344509392 and 344509401.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (344509031) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10680 + ... + 28338.

It is an arithmetic number, because the mean of its divisors is an integer number (32847600).

Almost surely, 2^344509431 is an apocalyptic number.

344509431 is a deficient number, since it is larger than the sum of its proper divisors (181052169).

344509431 is a wasteful number, since it uses less digits than its factorization.

344509431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18598.

The product of its (nonzero) digits is 25920, while the sum is 33.

The square root of 344509431 is about 18560.9652496846. The cubic root of 344509431 is about 701.0253212425.

The spelling of 344509431 in words is "three hundred forty-four million, five hundred nine thousand, four hundred thirty-one".