1031310231320 has 32 divisors (see below), whose sum is σ = 2320708065120. Its totient is φ = 412477862400.

The previous prime is 1031310231307. The next prime is 1031310231331. The reversal of 1031310231320 is 231320131301.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a junction number, because it is equal to n+sod(n) for n = 1031310231292 and 1031310231301.

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, 1082177 + ... + 1798256.

It is an arithmetic number, because the mean of its divisors is an integer number (72522127035).

Almost surely, 2^{1031310231320} is an apocalyptic number.

1031310231320 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1031310231320 is an abundant number, since it is smaller than the sum of its proper divisors (1289397833800).

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

1031310231320 is a wasteful number, since it uses less digits than its factorization.

1031310231320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2889395 (or 2889391 counting only the distinct ones).

The product of its (nonzero) digits is 324, while the sum is 20.

Adding to 1031310231320 its reverse (231320131301), we get a palindrome (1262630362621).

The spelling of 1031310231320 in words is "one trillion, thirty-one billion, three hundred ten million, two hundred thirty-one thousand, three hundred twenty".