673145423131 has 8 divisors (see below), whose sum is σ = 684194924000. Its totient is φ = 662096384640.

The previous prime is 673145423123. The next prime is 673145423141. The reversal of 673145423131 is 131324541376.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 673145423131 - 2³ = 673145423123 is a prime.

It is a super-2 number, since 2×673145423131² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (673145423141) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4029475 + ... + 4193203.

It is an arithmetic number, because the mean of its divisors is an integer number (85524365500).

Almost surely, 2^673145423131 is an apocalyptic number.

673145423131 is a gapful number since it is divisible by the number (61) formed by its first and last digit.

673145423131 is a deficient number, since it is larger than the sum of its proper divisors (11049500869).

673145423131 is a wasteful number, since it uses less digits than its factorization.

673145423131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 231189.

The product of its digits is 181440, while the sum is 40.

The spelling of 673145423131 in words is "six hundred seventy-three billion, one hundred forty-five million, four hundred twenty-three thousand, one hundred thirty-one".