31330142233 has 12 divisors (see below), whose sum is σ = 33998269968. Its totient is φ = 28858131120.

The previous prime is 31330142203. The next prime is 31330142287. The reversal of 31330142233 is 33224103313.

It is not a de Polignac number, because 31330142233 - 2¹³ = 31330134041 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 31330142198 and 31330142207.

It is not an unprimeable number, because it can be changed into a prime (31330142203) 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, 119563 + ... + 277408.

It is an arithmetic number, because the mean of its divisors is an integer number (2833189164).

Almost surely, 2^31330142233 is an apocalyptic number.

It is an amenable number.

31330142233 is a deficient number, since it is larger than the sum of its proper divisors (2668127735).

31330142233 is a wasteful number, since it uses less digits than its factorization.

31330142233 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 397464 (or 397451 counting only the distinct ones).

The product of its (nonzero) digits is 3888, while the sum is 25.

Adding to 31330142233 its reverse (33224103313), we get a palindrome (64554245546).

The spelling of 31330142233 in words is "thirty-one billion, three hundred thirty million, one hundred forty-two thousand, two hundred thirty-three".