10231113031220 has 12 divisors (see below), whose sum is σ = 21485337365604. Its totient is φ = 4092445212480.

The previous prime is 10231113031187. The next prime is 10231113031241. The reversal of 10231113031220 is 2213031113201.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 4918290869284 + 5312822161936 = 2217722^2 + 2304956^2 .

It is a Harshad number since it is a multiple of its sum of digits (20), and also a Moran number because the ratio is a prime number: 511555651561 = 10231113031220 / (1 + 0 + 2 + 3 + 1 + 1 + 1 + 3 + 0 + 3 + 1 + 2 + 2 + 0).

It is a junction number, because it is equal to n+sod(n) for n = 10231113031192 and 10231113031201.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 255777825761 + ... + 255777825800.

It is an arithmetic number, because the mean of its divisors is an integer number (1790444780467).

Almost surely, 2^{10231113031220} is an apocalyptic number.

10231113031220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

10231113031220 is an abundant number, since it is smaller than the sum of its proper divisors (11254224334384).

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

10231113031220 is a wasteful number, since it uses less digits than its factorization.

10231113031220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 511555651570 (or 511555651568 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 20.

Adding to 10231113031220 its reverse (2213031113201), we get a palindrome (12444144144421).

The spelling of 10231113031220 in words is "ten trillion, two hundred thirty-one billion, one hundred thirteen million, thirty-one thousand, two hundred twenty".