345173131 has 2 divisors, whose sum is σ = 345173132. Its totient is φ = 345173130.

The previous prime is 345173107. The next prime is 345173159. The reversal of 345173131 is 131371543.

It is an a-pointer prime, because the next prime (345173159) can be obtained adding 345173131 to its sum of digits (28).

It is a weak prime.

It is an emirp because it is prime and its reverse (131371543) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-345173131 is a prime.

It is a super-2 number, since 2×345173131² = 238288980728686322, 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 345173131.

It is not a weakly prime, because it can be changed into another prime (345173431) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 172586565 + 172586566.

It is an arithmetic number, because the mean of its divisors is an integer number (172586566).

Almost surely, 2^345173131 is an apocalyptic number.

345173131 is a deficient number, since it is larger than the sum of its proper divisors (1).

345173131 is an equidigital number, since it uses as much as digits as its factorization.

345173131 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3780, while the sum is 28.

The square root of 345173131 is about 18578.8355663104. The cubic root of 345173131 is about 701.4752093064.

The spelling of 345173131 in words is "three hundred forty-five million, one hundred seventy-three thousand, one hundred thirty-one".