345425131 has 2 divisors, whose sum is σ = 345425132. Its totient is φ = 345425130.

The previous prime is 345425107. The next prime is 345425161. The reversal of 345425131 is 131524543.

It is a weak prime.

It is an emirp because it is prime and its reverse (131524543) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-345425131 is a prime.

It is a super-2 number, since 2×345425131² = 238637042252734322, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 345425131.

It is not a weakly prime, because it can be changed into another prime (345425161) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 172712565 + 172712566.

It is an arithmetic number, because the mean of its divisors is an integer number (172712566).

Almost surely, 2^345425131 is an apocalyptic number.

345425131 is a deficient number, since it is larger than the sum of its proper divisors (1).

345425131 is an equidigital number, since it uses as much as digits as its factorization.

345425131 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 7200, while the sum is 28.

The square root of 345425131 is about 18585.6162394471. The cubic root of 345425131 is about 701.6458760779.

Adding to 345425131 its reverse (131524543), we get a palindrome (476949674).

The spelling of 345425131 in words is "three hundred forty-five million, four hundred twenty-five thousand, one hundred thirty-one".