31234331121 has 24 divisors (see below), whose sum is σ = 48597981120. Its totient is φ = 17791859232.

The previous prime is 31234331101. The next prime is 31234331153. The reversal of 31234331121 is 12113343213.

It is not a de Polignac number, because 31234331121 - 2¹⁰ = 31234330097 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 31234331091 and 31234331100.

It is not an unprimeable number, because it can be changed into a prime (31234331101) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 288541 + ... + 381738.

It is an arithmetic number, because the mean of its divisors is an integer number (2024915880).

Almost surely, 2^31234331121 is an apocalyptic number.

It is an amenable number.

31234331121 is a deficient number, since it is larger than the sum of its proper divisors (17363649999).

31234331121 is a wasteful number, since it uses less digits than its factorization.

31234331121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 670613 (or 670606 counting only the distinct ones).

The product of its digits is 1296, while the sum is 24.

Adding to 31234331121 its reverse (12113343213), we get a palindrome (43347674334).

The spelling of 31234331121 in words is "thirty-one billion, two hundred thirty-four million, three hundred thirty-one thousand, one hundred twenty-one".