40230531 has 24 divisors (see below), whose sum is σ = 63685440. Its totient is φ = 24270000.

The previous prime is 40230527. The next prime is 40230557. The reversal of 40230531 is 13503204.

It is not a de Polignac number, because 40230531 - 2² = 40230527 is a prime.

It is a super-2 number, since 2×40230531² = 3236991249083922, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (40230571) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 24040 + ... + 25658.

It is an arithmetic number, because the mean of its divisors is an integer number (2653560).

Almost surely, 2^40230531 is an apocalyptic number.

40230531 is a deficient number, since it is larger than the sum of its proper divisors (23454909).

40230531 is a wasteful number, since it uses less digits than its factorization.

40230531 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1887 (or 1884 counting only the distinct ones).

The product of its (nonzero) digits is 360, while the sum is 18.

The square root of 40230531 is about 6342.7542124853. The cubic root of 40230531 is about 342.6509353043.

Adding to 40230531 its reverse (13503204), we get a palindrome (53733735).

The spelling of 40230531 in words is "forty million, two hundred thirty thousand, five hundred thirty-one".