31030132012212 has 96 divisors (see below), whose sum is σ = 79620191723520. Its totient is φ = 9362083800960.

The previous prime is 31030132012211. The next prime is 31030132012267. The reversal of 31030132012212 is 21221023103013.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31030132012211) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1097262 + ... + 7953882.

It is an arithmetic number, because the mean of its divisors is an integer number (829376997120).

Almost surely, 2^{31030132012212} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 31030132012212, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (39810095861760).

31030132012212 is an abundant number, since it is smaller than the sum of its proper divisors (48590059711308).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

31030132012212 is a wasteful number, since it uses less digits than its factorization.

31030132012212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6857533 (or 6857531 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 21.

Adding to 31030132012212 its reverse (21221023103013), we get a palindrome (52251155115225).

The spelling of 31030132012212 in words is "thirty-one trillion, thirty billion, one hundred thirty-two million, twelve thousand, two hundred twelve".