31553520212 has 12 divisors (see below), whose sum is σ = 55224011136. Its totient is φ = 15775231320.

The previous prime is 31553520211. The next prime is 31553520217. The reversal of 31553520212 is 21202535513.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31553520211) 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, 335114 + ... + 418817.

It is an arithmetic number, because the mean of its divisors is an integer number (4602000928).

Almost surely, 2^31553520212 is an apocalyptic number.

It is an amenable number.

31553520212 is a deficient number, since it is larger than the sum of its proper divisors (23670490924).

31553520212 is a wasteful number, since it uses less digits than its factorization.

31553520212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 764398 (or 764396 counting only the distinct ones).

The product of its (nonzero) digits is 9000, while the sum is 29.

The spelling of 31553520212 in words is "thirty-one billion, five hundred fifty-three million, five hundred twenty thousand, two hundred twelve".