20342231031 has 16 divisors (see below), whose sum is σ = 28010900480. Its totient is φ = 13117930560.

The previous prime is 20342231029. The next prime is 20342231051. The reversal of 20342231031 is 13013224302.

It is not a de Polignac number, because 20342231031 - 2¹ = 20342231029 is a prime.

It is a super-2 number, since 2×20342231031² (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 = 20342230989 and 20342231007.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20342231051) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 155235 + ... + 254523.

It is an arithmetic number, because the mean of its divisors is an integer number (1750681280).

Almost surely, 2^20342231031 is an apocalyptic number.

20342231031 is a deficient number, since it is larger than the sum of its proper divisors (7668669449).

20342231031 is a wasteful number, since it uses less digits than its factorization.

20342231031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 101526.

The product of its (nonzero) digits is 864, while the sum is 21.

Adding to 20342231031 its reverse (13013224302), we get a palindrome (33355455333).

The spelling of 20342231031 in words is "twenty billion, three hundred forty-two million, two hundred thirty-one thousand, thirty-one".