31212142132 has 6 divisors (see below), whose sum is σ = 54621248738. Its totient is φ = 15606071064.

The previous prime is 31212142109. The next prime is 31212142151. The reversal of 31212142132 is 23124121213.

It can be written as a sum of positive squares in only one way, i.e., 16849078416 + 14363063716 = 129804^2 + 119846^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3901517763 + ... + 3901517770.

Almost surely, 2^31212142132 is an apocalyptic number.

It is an amenable number.

31212142132 is a deficient number, since it is larger than the sum of its proper divisors (23409106606).

31212142132 is a wasteful number, since it uses less digits than its factorization.

31212142132 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7803035537 (or 7803035535 counting only the distinct ones).

The product of its digits is 576, while the sum is 22.

Adding to 31212142132 its reverse (23124121213), we get a palindrome (54336263345).

The spelling of 31212142132 in words is "thirty-one billion, two hundred twelve million, one hundred forty-two thousand, one hundred thirty-two".