2031313140 has 60 divisors (see below), whose sum is σ = 6372309636. Its totient is φ = 541683072.

The previous prime is 2031313133. The next prime is 2031313171. The reversal of 2031313140 is 413131302.

It can be written as a sum of positive squares in 2 ways, for example, as 1025408484 + 1005904656 = 32022^2 + 31716^2 .

It is a tau number, because it is divible by the number of its divisors (60).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 625329 + ... + 628568.

Almost surely, 2^2031313140 is an apocalyptic number.

2031313140 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2031313140 is an abundant number, since it is smaller than the sum of its proper divisors (4340996496).

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

2031313140 is a wasteful number, since it uses less digits than its factorization.

2031313140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1253918 (or 1253907 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 18.

The square root of 2031313140 is about 45070.0914132643. The cubic root of 2031313140 is about 1266.4623768720.

Adding to 2031313140 its reverse (413131302), we get a palindrome (2444444442).

The spelling of 2031313140 in words is "two billion, thirty-one million, three hundred thirteen thousand, one hundred forty".