673131577231 has 4 divisors (see below), whose sum is σ = 708559555000. Its totient is φ = 637703599464.

The previous prime is 673131577207. The next prime is 673131577243. The reversal of 673131577231 is 132775131376.

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

It is a cyclic number.

It is not a de Polignac number, because 673131577231 - 2¹³ = 673131569039 is a prime.

It is a super-2 number, since 2×673131577231² (a number of 24 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 (673131577201) 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, 17713988856 + ... + 17713988893.

It is an arithmetic number, because the mean of its divisors is an integer number (177139888750).

Almost surely, 2^673131577231 is an apocalyptic number.

673131577231 is a deficient number, since it is larger than the sum of its proper divisors (35427977769).

673131577231 is a wasteful number, since it uses less digits than its factorization.

673131577231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35427977768.

The product of its digits is 555660, while the sum is 46.

The spelling of 673131577231 in words is "six hundred seventy-three billion, one hundred thirty-one million, five hundred seventy-seven thousand, two hundred thirty-one".