31212202132 has 12 divisors (see below), whose sum is σ = 54849896640. Its totient is φ = 15540803096.

The previous prime is 31212202111. The next prime is 31212202159. The reversal of 31212202132 is 23120221213.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 16323418 + ... + 16325329.

It is an arithmetic number, because the mean of its divisors is an integer number (4570824720).

Almost surely, 2^31212202132 is an apocalyptic number.

It is an amenable number.

31212202132 is a deficient number, since it is larger than the sum of its proper divisors (23637694508).

31212202132 is a wasteful number, since it uses less digits than its factorization.

31212202132 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32648990 (or 32648988 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 19.

Adding to 31212202132 its reverse (23120221213), we get a palindrome (54332423345).

The spelling of 31212202132 in words is "thirty-one billion, two hundred twelve million, two hundred two thousand, one hundred thirty-two".