3423512731645 has 4 divisors (see below), whose sum is σ = 4108215277980. Its totient is φ = 2738810185312.

The previous prime is 3423512731633. The next prime is 3423512731657. The reversal of 3423512731645 is 5461372153243.

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 (3423512731633) and next prime (3423512731657).

It can be written as a sum of positive squares in 2 ways, for example, as 740737356921 + 2682775374724 = 860661^2 + 1637918^2 .

It is a cyclic number.

It is not a de Polignac number, because 3423512731645 - 2³³ = 3414922797053 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 3423512731595 and 3423512731604.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 342351273160 + ... + 342351273169.

It is an arithmetic number, because the mean of its divisors is an integer number (1027053819495).

Almost surely, 2^{3423512731645} is an apocalyptic number.

It is an amenable number.

3423512731645 is a deficient number, since it is larger than the sum of its proper divisors (684702546335).

3423512731645 is an equidigital number, since it uses as much as digits as its factorization.

3423512731645 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 684702546334.

The product of its digits is 1814400, while the sum is 46.

Adding to 3423512731645 its reverse (5461372153243), we get a palindrome (8884884884888).

The spelling of 3423512731645 in words is "three trillion, four hundred twenty-three billion, five hundred twelve million, seven hundred thirty-one thousand, six hundred forty-five".