31121230232 has 16 divisors (see below), whose sum is σ = 58378355640. Its totient is φ = 15553668736.

The previous prime is 31121230207. The next prime is 31121230267. The reversal of 31121230232 is 23203212113.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 849233 + ... + 885120.

Almost surely, 2^31121230232 is an apocalyptic number.

It is an amenable number.

31121230232 is a deficient number, since it is larger than the sum of its proper divisors (27257125408).

31121230232 is a wasteful number, since it uses less digits than its factorization.

31121230232 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1736602 (or 1736598 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 20.

Adding to 31121230232 its reverse (23203212113), we get a palindrome (54324442345).

The spelling of 31121230232 in words is "thirty-one billion, one hundred twenty-one million, two hundred thirty thousand, two hundred thirty-two".