31023023131320 has 192 divisors, whose sum is σ = 102488178229920. Its totient is φ = 7506829440000.

The previous prime is 31023023131297. The next prime is 31023023131339. The reversal of 31023023131320 is 2313132032013.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 5880670 + ... + 9829970.

Almost surely, 2^{31023023131320} is an apocalyptic number.

31023023131320 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 31023023131320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (51244089114960).

31023023131320 is an abundant number, since it is smaller than the sum of its proper divisors (71465155098600).

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

31023023131320 is a wasteful number, since it uses less digits than its factorization.

31023023131320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3949878 (or 3949863 counting only the distinct ones).

The product of its (nonzero) digits is 1944, while the sum is 24.

Adding to 31023023131320 its reverse (2313132032013), we get a palindrome (33336155163333).

The spelling of 31023023131320 in words is "thirty-one trillion, twenty-three billion, twenty-three million, one hundred thirty-one thousand, three hundred twenty".