31122002230 has 24 divisors (see below), whose sum is σ = 61575269616. Its totient is φ = 11317091280.

The previous prime is 31122002089. The next prime is 31122002231. The reversal of 31122002230 is 3220022113.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31122002231) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 12859122 + ... + 12861541.

It is an arithmetic number, because the mean of its divisors is an integer number (2565636234).

Almost surely, 2^31122002230 is an apocalyptic number.

31122002230 is a deficient number, since it is larger than the sum of its proper divisors (30453267386).

31122002230 is a wasteful number, since it uses less digits than its factorization.

31122002230 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25720692 (or 25720681 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 16.

Adding to 31122002230 its reverse (3220022113), we get a palindrome (34342024343).

The spelling of 31122002230 in words is "thirty-one billion, one hundred twenty-two million, two thousand, two hundred thirty".