31201233532 has 18 divisors (see below), whose sum is σ = 63516797232. Its totient is φ = 13371957144.

The previous prime is 31201233527. The next prime is 31201233563. The reversal of 31201233532 is 23533210213.

It is a junction number, because it is equal to n+sod(n) for n = 31201233497 and 31201233506.

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 5 ways as a sum of consecutive naturals, for example, 79594788 + ... + 79595179.

Almost surely, 2^31201233532 is an apocalyptic number.

It is an amenable number.

31201233532 is an abundant number, since it is smaller than the sum of its proper divisors (32315563700).

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

31201233532 is a wasteful number, since it uses less digits than its factorization.

31201233532 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 159189985 (or 159189976 counting only the distinct ones).

The product of its (nonzero) digits is 3240, while the sum is 25.

Adding to 31201233532 its reverse (23533210213), we get a palindrome (54734443745).

The spelling of 31201233532 in words is "thirty-one billion, two hundred one million, two hundred thirty-three thousand, five hundred thirty-two".