31445743173 has 16 divisors (see below), whose sum is σ = 45660202560. Its totient is φ = 19133794944.

The previous prime is 31445743163. The next prime is 31445743201. The reversal of 31445743173 is 37134754413.

It is not a de Polignac number, because 31445743173 - 2⁴ = 31445743157 is a prime.

It is a super-2 number, since 2×31445743173² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31445743103) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4526311 + ... + 4533252.

It is an arithmetic number, because the mean of its divisors is an integer number (2853762660).

Almost surely, 2^31445743173 is an apocalyptic number.

It is an amenable number.

31445743173 is a deficient number, since it is larger than the sum of its proper divisors (14214459387).

31445743173 is a wasteful number, since it uses less digits than its factorization.

31445743173 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9059668.

The product of its digits is 423360, while the sum is 42.

The spelling of 31445743173 in words is "thirty-one billion, four hundred forty-five million, seven hundred forty-three thousand, one hundred seventy-three".