31221302401300 has 36 divisors (see below), whose sum is σ = 73909337687136. Its totient is φ = 11353200872800.

The previous prime is 31221302401291. The next prime is 31221302401301. The reversal of 31221302401300 is 310420312213.

It is a super-2 number, since 2×31221302401300² (a number of 28 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31221302401301) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 14191499992 + ... + 14191502191.

It is an arithmetic number, because the mean of its divisors is an integer number (2053037157976).

Almost surely, 2^{31221302401300} is an apocalyptic number.

It is an amenable number.

31221302401300 is an abundant number, since it is smaller than the sum of its proper divisors (42688035285836).

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

31221302401300 is a wasteful number, since it uses less digits than its factorization.

31221302401300 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28383002208 (or 28383002201 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 22.

Adding to 31221302401300 its reverse (310420312213), we get a palindrome (31531722713513).

The spelling of 31221302401300 in words is "thirty-one trillion, two hundred twenty-one billion, three hundred two million, four hundred one thousand, three hundred".