20310232031 has 4 divisors (see below), whose sum is σ = 20311708872. Its totient is φ = 20308755192.

The previous prime is 20310231979. The next prime is 20310232043. The reversal of 20310232031 is 13023201302.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 13023201302 = 2 ⋅6511600651.

It is a cyclic number.

It is not a de Polignac number, because 20310232031 - 2⁶ = 20310231967 is a prime.

It is a super-2 number, since 2×20310232031² (a number of 21 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 (20310232051) 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, 717596 + ... + 745361.

It is an arithmetic number, because the mean of its divisors is an integer number (5077927218).

Almost surely, 2^20310232031 is an apocalyptic number.

20310232031 is a deficient number, since it is larger than the sum of its proper divisors (1476841).

20310232031 is a wasteful number, since it uses less digits than its factorization.

20310232031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1476840.

The product of its (nonzero) digits is 216, while the sum is 17.

Adding to 20310232031 its reverse (13023201302), we get a palindrome (33333433333).

The spelling of 20310232031 in words is "twenty billion, three hundred ten million, two hundred thirty-two thousand, thirty-one".