2040542731 has 8 divisors (see below), whose sum is σ = 2062609920. Its totient is φ = 2018496768.

The previous prime is 2040542723. The next prime is 2040542761. The reversal of 2040542731 is 1372450402.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 2040542731 - 2³ = 2040542723 is a prime.

It is a super-2 number, since 2×2040542731² = 8327629274073876722, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 2040542731.

It is not an unprimeable number, because it can be changed into a prime (2040542701) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 256725 + ... + 264553.

It is an arithmetic number, because the mean of its divisors is an integer number (257826240).

Almost surely, 2^2040542731 is an apocalyptic number.

2040542731 is a deficient number, since it is larger than the sum of its proper divisors (22067189).

2040542731 is an equidigital number, since it uses as much as digits as its factorization.

2040542731 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10613.

The product of its (nonzero) digits is 6720, while the sum is 28.

The square root of 2040542731 is about 45172.3668961457. The cubic root of 2040542731 is about 1268.3776028050.

It can be divided in two parts, 20405 and 42731, that added together give a palindrome (63136).

The spelling of 2040542731 in words is "two billion, forty million, five hundred forty-two thousand, seven hundred thirty-one".