31001212132 has 12 divisors (see below), whose sum is σ = 59184132336. Its totient is φ = 14091460040.

The previous prime is 31001212127. The next prime is 31001212139. The reversal of 31001212132 is 23121210013.

It is a super-2 number, since 2×31001212132² (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (31001212139) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 352286458 + ... + 352286545.

It is an arithmetic number, because the mean of its divisors is an integer number (4932011028).

Almost surely, 2^31001212132 is an apocalyptic number.

It is an amenable number.

31001212132 is a deficient number, since it is larger than the sum of its proper divisors (28182920204).

31001212132 is a wasteful number, since it uses less digits than its factorization.

31001212132 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 704573018 (or 704573016 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 16.

Adding to 31001212132 its reverse (23121210013), we get a palindrome (54122422145).

The spelling of 31001212132 in words is "thirty-one billion, one million, two hundred twelve thousand, one hundred thirty-two".