31122423243 has 24 divisors (see below), whose sum is σ = 47686146768. Its totient is φ = 19492042752.

The previous prime is 31122423229. The next prime is 31122423253. The reversal of 31122423243 is 34232422113.

31122423243 is a `hidden beast` number, since 311 + 2 + 24 + 2 + 324 + 3 = 666.

It is not a de Polignac number, because 31122423243 - 2¹² = 31122419147 is a prime.

It is not an unprimeable number, because it can be changed into a prime (31122423223) 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, 102246 + ... + 269627.

It is an arithmetic number, because the mean of its divisors is an integer number (1986922782).

Almost surely, 2^31122423243 is an apocalyptic number.

31122423243 is a deficient number, since it is larger than the sum of its proper divisors (16563723525).

31122423243 is a wasteful number, since it uses less digits than its factorization.

31122423243 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 372443 (or 372440 counting only the distinct ones).

The product of its digits is 6912, while the sum is 27.

Adding to 31122423243 its reverse (34232422113), we get a palindrome (65354845356).

The spelling of 31122423243 in words is "thirty-one billion, one hundred twenty-two million, four hundred twenty-three thousand, two hundred forty-three".