40231485 has 80 divisors (see below), whose sum is σ = 86144256. Its totient is φ = 17563392.

The previous prime is 40231481. The next prime is 40231489. The reversal of 40231485 is 58413204.

It is an interprime number because it is at equal distance from previous prime (40231481) and next prime (40231489).

It is not a de Polignac number, because 40231485 - 2² = 40231481 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40231481) by changing a digit.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 64897 + ... + 65513.

Almost surely, 2^40231485 is an apocalyptic number.

40231485 is a gapful number since it is divisible by the number (45) formed by its first and last digit.

It is an amenable number.

40231485 is an abundant number, since it is smaller than the sum of its proper divisors (45912771).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

40231485 is a wasteful number, since it uses less digits than its factorization.

40231485 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 664 (or 655 counting only the distinct ones).

The product of its (nonzero) digits is 3840, while the sum is 27.

The square root of 40231485 is about 6342.8294159626. The cubic root of 40231485 is about 342.6536437482.

Adding to 40231485 its reverse (58413204), we get a palindrome (98644689).

The spelling of 40231485 in words is "forty million, two hundred thirty-one thousand, four hundred eighty-five".