345211389 has 32 divisors (see below), whose sum is σ = 535689600. Its totient is φ = 222164208.

The previous prime is 345211387. The next prime is 345211409. The reversal of 345211389 is 983112543.

It is not a de Polignac number, because 345211389 - 2¹ = 345211387 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (345211387) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 60702 + ... + 66144.

It is an arithmetic number, because the mean of its divisors is an integer number (16740300).

Almost surely, 2^345211389 is an apocalyptic number.

It is an amenable number.

345211389 is a deficient number, since it is larger than the sum of its proper divisors (190478211).

345211389 is an frugal number, since it uses more digits than its factorization.

345211389 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5493 (or 5475 counting only the distinct ones).

The product of its digits is 25920, while the sum is 36.

The square root of 345211389 is about 18579.8651502103. The cubic root of 345211389 is about 701.5011248491.

It can be divided in two parts, 3452 and 11389, that added together give a palindrome (14841).

The spelling of 345211389 in words is "three hundred forty-five million, two hundred eleven thousand, three hundred eighty-nine".