31302120030132 has 96 divisors (see below), whose sum is σ = 83556309537792. Its totient is φ = 8934468615936.

The previous prime is 31302120030127. The next prime is 31302120030133. The reversal of 31302120030132 is 23103002120313.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a junction number, because it is equal to n+sod(n) for n = 31302120030099 and 31302120030108.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31302120030133) 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, 339298003 + ... + 339390245.

It is an arithmetic number, because the mean of its divisors is an integer number (870378224352).

Almost surely, 2^{31302120030132} is an apocalyptic number.

It is an amenable number.

31302120030132 is an abundant number, since it is smaller than the sum of its proper divisors (52254189507660).

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

31302120030132 is a wasteful number, since it uses less digits than its factorization.

31302120030132 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 96277 (or 96275 counting only the distinct ones).

The product of its (nonzero) digits is 648, while the sum is 21.

Adding to 31302120030132 its reverse (23103002120313), we get a palindrome (54405122150445).

The spelling of 31302120030132 in words is "thirty-one trillion, three hundred two billion, one hundred twenty million, thirty thousand, one hundred thirty-two".