2240021531 has 16 divisors (see below), whose sum is σ = 2486854656. Its totient is φ = 2000700000.

The previous prime is 2240021501. The next prime is 2240021599. The reversal of 2240021531 is 1351200422.

It is a cyclic number.

It is not a de Polignac number, because 2240021531 - 2¹⁰ = 2240020507 is a prime.

It is a super-2 number, since 2×2240021531² = 10035392918687167922, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (2240021501) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 137846 + ... + 153236.

It is an arithmetic number, because the mean of its divisors is an integer number (155428416).

Almost surely, 2^2240021531 is an apocalyptic number.

2240021531 is a deficient number, since it is larger than the sum of its proper divisors (246833125).

2240021531 is a wasteful number, since it uses less digits than its factorization.

2240021531 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15634.

The product of its (nonzero) digits is 480, while the sum is 20.

The square root of 2240021531 is about 47328.8657269536. The cubic root of 2240021531 is about 1308.4307162840.

Adding to 2240021531 its reverse (1351200422), we get a palindrome (3591221953).

The spelling of 2240021531 in words is "two billion, two hundred forty million, twenty-one thousand, five hundred thirty-one".