349251623 has 4 divisors (see below), whose sum is σ = 399144720. Its totient is φ = 299358528.

The previous prime is 349251613. The next prime is 349251641. The reversal of 349251623 is 326152943.

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

It is not a de Polignac number, because 349251623 - 2¹² = 349247527 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (349251613) 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, 24946538 + ... + 24946551.

It is an arithmetic number, because the mean of its divisors is an integer number (99786180).

Almost surely, 2^349251623 is an apocalyptic number.

349251623 is a deficient number, since it is larger than the sum of its proper divisors (49893097).

349251623 is an equidigital number, since it uses as much as digits as its factorization.

349251623 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49893096.

The product of its digits is 38880, while the sum is 35.

The square root of 349251623 is about 18688.2750140295. The cubic root of 349251623 is about 704.2272256092.

The spelling of 349251623 in words is "three hundred forty-nine million, two hundred fifty-one thousand, six hundred twenty-three".