2040145531 has 2 divisors, whose sum is σ = 2040145532. Its totient is φ = 2040145530.

The previous prime is 2040145493. The next prime is 2040145543. The reversal of 2040145531 is 1355410402.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2040145531 is a prime.

It is a super-2 number, since 2×2040145531² = 8324387575318543922, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 2040145496 and 2040145505.

It is not a weakly prime, because it can be changed into another prime (2040145631) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1020072765 + 1020072766.

It is an arithmetic number, because the mean of its divisors is an integer number (1020072766).

Almost surely, 2^2040145531 is an apocalyptic number.

2040145531 is a deficient number, since it is larger than the sum of its proper divisors (1).

2040145531 is an equidigital number, since it uses as much as digits as its factorization.

2040145531 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2400, while the sum is 25.

The square root of 2040145531 is about 45167.9701890621. The cubic root of 2040145531 is about 1268.2952991661.

Adding to 2040145531 its reverse (1355410402), we get a palindrome (3395555933).

The spelling of 2040145531 in words is "two billion, forty million, one hundred forty-five thousand, five hundred thirty-one".