31023220030032 has 40 divisors (see below), whose sum is σ = 80385443281120. Its totient is φ = 10309831424640.

The previous prime is 31023220029917. The next prime is 31023220030039. The reversal of 31023220030032 is 23003002232013.

It is a junction number, because it is equal to n+sod(n) for n = 31023220029990 and 31023220030008.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31023220030039) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 976293907 + ... + 976325682.

It is an arithmetic number, because the mean of its divisors is an integer number (2009636082028).

Almost surely, 2^{31023220030032} is an apocalyptic number.

It is an amenable number.

31023220030032 is an abundant number, since it is smaller than the sum of its proper divisors (49362223251088).

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

31023220030032 is a wasteful number, since it uses less digits than its factorization.

31023220030032 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1952619931 (or 1952619925 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 21.

Adding to 31023220030032 its reverse (23003002232013), we get a palindrome (54026222262045).

The spelling of 31023220030032 in words is "thirty-one trillion, twenty-three billion, two hundred twenty million, thirty thousand, thirty-two".