2040215531 has 2 divisors, whose sum is σ = 2040215532. Its totient is φ = 2040215530.

The previous prime is 2040215521. The next prime is 2040215537. The reversal of 2040215531 is 1355120402.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2040215531 - 2⁶ = 2040215467 is a prime.

It is a super-2 number, since 2×2040215531² = 8324958825867223922, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 2040215497 and 2040215506.

It is not a weakly prime, because it can be changed into another prime (2040215537) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1020107765 + 1020107766.

It is an arithmetic number, because the mean of its divisors is an integer number (1020107766).

Almost surely, 2^2040215531 is an apocalyptic number.

2040215531 is a deficient number, since it is larger than the sum of its proper divisors (1).

2040215531 is an equidigital number, since it uses as much as digits as its factorization.

2040215531 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1200, while the sum is 23.

The square root of 2040215531 is about 45168.7450678010. The cubic root of 2040215531 is about 1268.3098046110.

Adding to 2040215531 its reverse (1355120402), we get a palindrome (3395335933).

The spelling of 2040215531 in words is "two billion, forty million, two hundred fifteen thousand, five hundred thirty-one".