40985687231 has 4 divisors (see below), whose sum is σ = 41938842792. Its totient is φ = 40032531672.

The previous prime is 40985687203. The next prime is 40985687257. The reversal of 40985687231 is 13278658904.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 40985687231 - 2⁶ = 40985687167 is a prime.

It is a super-2 number, since 2×40985687231² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40985647231) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 476577716 + ... + 476577801.

It is an arithmetic number, because the mean of its divisors is an integer number (10484710698).

It is a 1-persistent number, because it is pandigital, but 2⋅40985687231 = 81971374462 is not.

Almost surely, 2^40985687231 is an apocalyptic number.

40985687231 is a deficient number, since it is larger than the sum of its proper divisors (953155561).

40985687231 is an equidigital number, since it uses as much as digits as its factorization.

40985687231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 953155560.

The product of its (nonzero) digits is 2903040, while the sum is 53.

The spelling of 40985687231 in words is "forty billion, nine hundred eighty-five million, six hundred eighty-seven thousand, two hundred thirty-one".