1031313120 has 96 divisors (see below), whose sum is σ = 3260168352. Its totient is φ = 274040832.

The previous prime is 1031313119. The next prime is 1031313131. The reversal of 1031313120 is 213131301.

It is a tau number, because it is divible by the number of its divisors (96).

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a self number, because there is not a number n which added to its sum of digits gives 1031313120.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 136974 + ... + 144306.

It is an arithmetic number, because the mean of its divisors is an integer number (33960087).

Almost surely, 2^1031313120 is an apocalyptic number.

1031313120 is a gapful number since it is divisible by the number (10) 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 1031313120, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1630084176).

1031313120 is an abundant number, since it is smaller than the sum of its proper divisors (2228855232).

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

1031313120 is a wasteful number, since it uses less digits than its factorization.

1031313120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7644 (or 7636 counting only the distinct ones).

The product of its (nonzero) digits is 54, while the sum is 15.

The square root of 1031313120 is about 32114.0642086921. The cubic root of 1031313120 is about 1010.3306175084.

Adding to 1031313120 its reverse (213131301), we get a palindrome (1244444421).

The spelling of 1031313120 in words is "one billion, thirty-one million, three hundred thirteen thousand, one hundred twenty".