345531313505503 has 4 divisors (see below), whose sum is σ = 345531377323008. Its totient is φ = 345531249688000.

The previous prime is 345531313505473. The next prime is 345531313505533. The reversal of 345531313505503 is 305505313135543.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (345531313505473) and next prime (345531313505533).

It is a cyclic number.

It is not a de Polignac number, because 345531313505503 - 2²⁵ = 345531279951071 is a prime.

It is a super-2 number, since 2×345531313505503² (a number of 30 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (345531313505533) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 22948498 + ... + 34895503.

It is an arithmetic number, because the mean of its divisors is an integer number (86382844330752).

Almost surely, 2^{345531313505503} is an apocalyptic number.

345531313505503 is a deficient number, since it is larger than the sum of its proper divisors (63817505).

345531313505503 is an equidigital number, since it uses as much as digits as its factorization.

345531313505503 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 63817504.

The product of its (nonzero) digits is 3037500, while the sum is 46.

The spelling of 345531313505503 in words is "three hundred forty-five trillion, five hundred thirty-one billion, three hundred thirteen million, five hundred five thousand, five hundred three".