31123133342 has 16 divisors (see below), whose sum is σ = 54795942240. Its totient is φ = 12977985888.

The previous prime is 31123133339. The next prime is 31123133347. The reversal of 31123133342 is 24333132113.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31123133347) 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, 30041117 + ... + 30042152.

It is an arithmetic number, because the mean of its divisors is an integer number (3424746390).

Almost surely, 2^31123133342 is an apocalyptic number.

31123133342 is a deficient number, since it is larger than the sum of its proper divisors (23672808898).

31123133342 is a wasteful number, since it uses less digits than its factorization.

31123133342 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 60083315.

The product of its digits is 3888, while the sum is 26.

Adding to 31123133342 its reverse (24333132113), we get a palindrome (55456265455).

The spelling of 31123133342 in words is "thirty-one billion, one hundred twenty-three million, one hundred thirty-three thousand, three hundred forty-two".