31132020030023 has 4 divisors (see below), whose sum is σ = 33962203669128. Its totient is φ = 28301836390920.

The previous prime is 31132020029963. The next prime is 31132020030037. The reversal of 31132020030023 is 32003002023113.

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 31132020030023 - 2³⁰ = 31130946288199 is a prime.

It is a super-2 number, since 2×31132020030023² (a number of 28 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 31132020029977 and 31132020030004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31102020030023) 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, 1415091819536 + ... + 1415091819557.

It is an arithmetic number, because the mean of its divisors is an integer number (8490550917282).

Almost surely, 2^{31132020030023} is an apocalyptic number.

31132020030023 is a deficient number, since it is larger than the sum of its proper divisors (2830183639105).

31132020030023 is a wasteful number, since it uses less digits than its factorization.

31132020030023 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2830183639104.

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

Adding to 31132020030023 its reverse (32003002023113), we get a palindrome (63135022053136).

The spelling of 31132020030023 in words is "thirty-one trillion, one hundred thirty-two billion, twenty million, thirty thousand, twenty-three".