31212030311332 has 24 divisors (see below), whose sum is σ = 58905638267000. Its totient is φ = 14385234306816.

The previous prime is 31212030311327. The next prime is 31212030311393. The reversal of 31212030311332 is 23311303021213.

It can be written as a sum of positive squares in 4 ways, for example, as 3915752338276 + 27296277973056 = 1978826^2 + 5224584^2 .

It is a super-2 number, since 2×31212030311332² (a number of 28 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 31212030311297 and 31212030311306.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 423257457 + ... + 423331192.

Almost surely, 2^{31212030311332} is an apocalyptic number.

It is an amenable number.

31212030311332 is a deficient number, since it is larger than the sum of its proper divisors (27693607955668).

31212030311332 is a wasteful number, since it uses less digits than its factorization.

31212030311332 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 846589375 (or 846589373 counting only the distinct ones).

The product of its (nonzero) digits is 1944, while the sum is 25.

Adding to 31212030311332 its reverse (23311303021213), we get a palindrome (54523333332545).

The spelling of 31212030311332 in words is "thirty-one trillion, two hundred twelve billion, thirty million, three hundred eleven thousand, three hundred thirty-two".