31132320023 has 8 divisors (see below), whose sum is σ = 35582888448. Its totient is φ = 26682525144.

The previous prime is 31132319971. The next prime is 31132320029. The reversal of 31132320023 is 32002323113.

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 31132320023 - 2²⁸ = 30863884567 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 31132319977 and 31132320004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31132320029) 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, 104411 + ... + 270492.

It is an arithmetic number, because the mean of its divisors is an integer number (4447861056).

Almost surely, 2^31132320023 is an apocalyptic number.

31132320023 is a deficient number, since it is larger than the sum of its proper divisors (4450568425).

31132320023 is a wasteful number, since it uses less digits than its factorization.

31132320023 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 386773.

The product of its (nonzero) digits is 648, while the sum is 20.

Adding to 31132320023 its reverse (32002323113), we get a palindrome (63134643136).

The spelling of 31132320023 in words is "thirty-one billion, one hundred thirty-two million, three hundred twenty thousand, twenty-three".