346391253 has 12 divisors (see below), whose sum is σ = 538831020. Its totient is φ = 213163776.

The previous prime is 346391249. The next prime is 346391281. The reversal of 346391253 is 352193643.

It is a happy number.

346391253 is a `hidden beast` number, since 3 + 4 + 639 + 12 + 5 + 3 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 230979204 + 115412049 = 15198^2 + 10743^2 .

It is not a de Polignac number, because 346391253 - 2² = 346391249 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (346391203) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1480188 + ... + 1480421.

It is an arithmetic number, because the mean of its divisors is an integer number (44902585).

Almost surely, 2^346391253 is an apocalyptic number.

It is an amenable number.

346391253 is a deficient number, since it is larger than the sum of its proper divisors (192439767).

346391253 is a wasteful number, since it uses less digits than its factorization.

346391253 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2960628 (or 2960625 counting only the distinct ones).

The product of its digits is 58320, while the sum is 36.

The square root of 346391253 is about 18611.5892121012. The cubic root of 346391253 is about 702.2994132717.

The spelling of 346391253 in words is "three hundred forty-six million, three hundred ninety-one thousand, two hundred fifty-three".