40350531 has 16 divisors (see below), whose sum is σ = 58737056. Its totient is φ = 24489216.

The previous prime is 40350529. The next prime is 40350551. The reversal of 40350531 is 13505304.

It is not a de Polignac number, because 40350531 - 2¹ = 40350529 is a prime.

It is a super-2 number, since 2×40350531² = 3256330703963922, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 40350498 and 40350507.

It is not an unprimeable number, because it can be changed into a prime (40350521) 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, 4240 + ... + 9933.

It is an arithmetic number, because the mean of its divisors is an integer number (3671066).

Almost surely, 2^40350531 is an apocalyptic number.

40350531 is a deficient number, since it is larger than the sum of its proper divisors (18386525).

40350531 is a wasteful number, since it uses less digits than its factorization.

40350531 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14262.

The product of its (nonzero) digits is 900, while the sum is 21.

The square root of 40350531 is about 6352.2067818987. The cubic root of 40350531 is about 342.9912845890.

Adding to 40350531 its reverse (13505304), we get a palindrome (53855835).

The spelling of 40350531 in words is "forty million, three hundred fifty thousand, five hundred thirty-one".