31142222224146 has 24 divisors (see below), whose sum is σ = 73608888893904. Its totient is φ = 9437037037560.

The previous prime is 31142222224103. The next prime is 31142222224147. The reversal of 31142222224146 is 64142222224113.

31142222224146 is a `hidden beast` number, since 3 + 1 + 1 + 422 + 2 + 2 + 224 + 1 + 4 + 6 = 666.

It is a self number, because there is not a number n which added to its sum of digits gives 31142222224146.

It is not an unprimeable number, because it can be changed into a prime (31142222224147) 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, 78641975116 + ... + 78641975511.

It is an arithmetic number, because the mean of its divisors is an integer number (3067037037246).

Almost surely, 2^{31142222224146} is an apocalyptic number.

31142222224146 is an abundant number, since it is smaller than the sum of its proper divisors (42466666669758).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

31142222224146 is a wasteful number, since it uses less digits than its factorization.

31142222224146 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 157283950646 (or 157283950643 counting only the distinct ones).

The product of its digits is 73728, while the sum is 36.

Adding to 31142222224146 its reverse (64142222224113), we get a palindrome (95284444448259).

The spelling of 31142222224146 in words is "thirty-one trillion, one hundred forty-two billion, two hundred twenty-two million, two hundred twenty-four thousand, one hundred forty-six".