20233240031 has 4 divisors (see below), whose sum is σ = 20260472592. Its totient is φ = 20206007472.

The previous prime is 20233239959. The next prime is 20233240061. The reversal of 20233240031 is 13004233202.

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 20233240031 - 2¹⁰ = 20233239007 is a prime.

It is a super-2 number, since 2×20233240031² (a number of 21 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 = 20233239985 and 20233240012.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20233240061) 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, 13615166 + ... + 13616651.

It is an arithmetic number, because the mean of its divisors is an integer number (5065118148).

Almost surely, 2^20233240031 is an apocalyptic number.

20233240031 is a deficient number, since it is larger than the sum of its proper divisors (27232561).

20233240031 is an equidigital number, since it uses as much as digits as its factorization.

20233240031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27232560.

The product of its (nonzero) digits is 864, while the sum is 20.

Adding to 20233240031 its reverse (13004233202), we get a palindrome (33237473233).

The spelling of 20233240031 in words is "twenty billion, two hundred thirty-three million, two hundred forty thousand, thirty-one".