31121234123 has 8 divisors (see below), whose sum is σ = 36292984800. Its totient is φ = 26675343240.

The previous prime is 31121234071. The next prime is 31121234143. The reversal of 31121234123 is 32143212113.

It is not a de Polignac number, because 31121234123 - 2³² = 26826266827 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (31121234143) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 45365888 + ... + 45366573.

It is an arithmetic number, because the mean of its divisors is an integer number (4536623100).

Almost surely, 2^31121234123 is an apocalyptic number.

31121234123 is a deficient number, since it is larger than the sum of its proper divisors (5171750677).

31121234123 is an frugal number, since it uses more digits than its factorization.

31121234123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 90732482 (or 90732468 counting only the distinct ones).

The product of its digits is 864, while the sum is 23.

Adding to 31121234123 its reverse (32143212113), we get a palindrome (63264446236).

The spelling of 31121234123 in words is "thirty-one billion, one hundred twenty-one million, two hundred thirty-four thousand, one hundred twenty-three".