31023020203000 has 256 divisors, whose sum is σ = 87368902732800. Its totient is φ = 10072273190400.

The previous prime is 31023020202973. The next prime is 31023020203039. The reversal of 31023020203000 is 30202032013.

It is a super-2 number, since 2×31023020203000² (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 63 ways as a sum of consecutive naturals, for example, 313431519 + ... + 313530481.

It is an arithmetic number, because the mean of its divisors is an integer number (341284776300).

Almost surely, 2^{31023020203000} 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 31023020203000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (43684451366400).

31023020203000 is an abundant number, since it is smaller than the sum of its proper divisors (56345882529800).

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

31023020203000 is a wasteful number, since it uses less digits than its factorization.

31023020203000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 101367 (or 101353 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 16.

Adding to 31023020203000 its reverse (30202032013), we get a palindrome (31053222235013).

The spelling of 31023020203000 in words is "thirty-one trillion, twenty-three billion, twenty million, two hundred three thousand".