346421403 has 6 divisors (see below), whose sum is σ = 500386484. Its totient is φ = 230947596.

The previous prime is 346421363. The next prime is 346421407. The reversal of 346421403 is 304124643.

346421403 is a `hidden beast` number, since 3 + 4 + 642 + 14 + 0 + 3 = 666.

It is not a de Polignac number, because 346421403 - 2¹⁰ = 346420379 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (346421407) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 19245625 + ... + 19245642.

Almost surely, 2^346421403 is an apocalyptic number.

346421403 is a deficient number, since it is larger than the sum of its proper divisors (153965081).

346421403 is a wasteful number, since it uses less digits than its factorization.

346421403 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38491273 (or 38491270 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 27.

The square root of 346421403 is about 18612.3991736691. The cubic root of 346421403 is about 702.3197887987.

The spelling of 346421403 in words is "three hundred forty-six million, four hundred twenty-one thousand, four hundred three".