349725631 has 2 divisors, whose sum is σ = 349725632. Its totient is φ = 349725630.

The previous prime is 349725619. The next prime is 349725659. The reversal of 349725631 is 136527943.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 349725631 - 2⁹ = 349725119 is a prime.

It is a super-2 number, since 2×349725631² = 244616033956696322, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (349725611) 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 as a sum of consecutive naturals, namely, 174862815 + 174862816.

It is an arithmetic number, because the mean of its divisors is an integer number (174862816).

Almost surely, 2^349725631 is an apocalyptic number.

349725631 is a deficient number, since it is larger than the sum of its proper divisors (1).

349725631 is an equidigital number, since it uses as much as digits as its factorization.

349725631 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 136080, while the sum is 40.

The square root of 349725631 is about 18700.9526762676. The cubic root of 349725631 is about 704.5456764662.

The spelling of 349725631 in words is "three hundred forty-nine million, seven hundred twenty-five thousand, six hundred thirty-one".