31232030023031 has 4 divisors (see below), whose sum is σ = 31232066061672. Its totient is φ = 31231993984392.

The previous prime is 31232030023009. The next prime is 31232030023057. The reversal of 31232030023031 is 13032003023213.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-31232030023031 is a prime.

It is a super-2 number, since 2×31232030023031² (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 = 31232030022988 and 31232030023006.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31232030323031) 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, 16686521 + ... + 18463586.

It is an arithmetic number, because the mean of its divisors is an integer number (7808016515418).

Almost surely, 2^{31232030023031} is an apocalyptic number.

31232030023031 is a deficient number, since it is larger than the sum of its proper divisors (36038641).

31232030023031 is an equidigital number, since it uses as much as digits as its factorization.

31232030023031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36038640.

The product of its (nonzero) digits is 1944, while the sum is 23.

Adding to 31232030023031 its reverse (13032003023213), we get a palindrome (44264033046244).

The spelling of 31232030023031 in words is "thirty-one trillion, two hundred thirty-two billion, thirty million, twenty-three thousand, thirty-one".