3172423145 has 8 divisors (see below), whose sum is σ = 3855096960. Its totient is φ = 2505812400.

The previous prime is 3172423139. The next prime is 3172423181. The reversal of 3172423145 is 5413242713.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 3172423145 - 2¹⁴ = 3172406761 is a prime.

It is a super-2 number, since 2×3172423145² = 20128537221863382050, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4015331 + ... + 4016120.

It is an arithmetic number, because the mean of its divisors is an integer number (481887120).

Almost surely, 2^3172423145 is an apocalyptic number.

It is an amenable number.

3172423145 is a deficient number, since it is larger than the sum of its proper divisors (682673815).

3172423145 is an equidigital number, since it uses as much as digits as its factorization.

3172423145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8031535.

The product of its digits is 20160, while the sum is 32.

The square root of 3172423145 is about 56324.2678159246. The cubic root of 3172423145 is about 1469.3672975574.

Adding to 3172423145 its reverse (5413242713), we get a palindrome (8585665858).

The spelling of 3172423145 in words is "three billion, one hundred seventy-two million, four hundred twenty-three thousand, one hundred forty-five".