31023332232220 has 24 divisors (see below), whose sum is σ = 65149233963408. Its totient is φ = 12409287888000.

The previous prime is 31023332232161. The next prime is 31023332232287. The reversal of 31023332232220 is 2223223332013.

It is a happy number.

It is a super-2 number, since 2×31023332232220² (a number of 28 digits) contains 22 as substring.

It is a congruent number.

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, 3147795 + ... + 8482645.

It is an arithmetic number, because the mean of its divisors is an integer number (2714551415142).

Almost surely, 2^{31023332232220} is an apocalyptic number.

It is an amenable number.

31023332232220 is an abundant number, since it is smaller than the sum of its proper divisors (34125901731188).

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

31023332232220 is a wasteful number, since it uses less digits than its factorization.

31023332232220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5625621 (or 5625619 counting only the distinct ones).

The product of its (nonzero) digits is 15552, while the sum is 28.

Adding to 31023332232220 its reverse (2223223332013), we get a palindrome (33246555564233).

The spelling of 31023332232220 in words is "thirty-one trillion, twenty-three billion, three hundred thirty-two million, two hundred thirty-two thousand, two hundred twenty".