346211431 has 2 divisors, whose sum is σ = 346211432. Its totient is φ = 346211430.

The previous prime is 346211419. The next prime is 346211449. The reversal of 346211431 is 134112643.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 346211431 - 2¹⁵ = 346178663 is a prime.

It is a super-2 number, since 2×346211431² = 239724709910135522, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 346211396 and 346211405.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (346211471) 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 as a sum of consecutive naturals, namely, 173105715 + 173105716.

It is an arithmetic number, because the mean of its divisors is an integer number (173105716).

Almost surely, 2^346211431 is an apocalyptic number.

346211431 is a deficient number, since it is larger than the sum of its proper divisors (1).

346211431 is an equidigital number, since it uses as much as digits as its factorization.

346211431 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1728, while the sum is 25.

The square root of 346211431 is about 18606.7576702659. The cubic root of 346211431 is about 702.1778640661.

The spelling of 346211431 in words is "three hundred forty-six million, two hundred eleven thousand, four hundred thirty-one".