40971231 has 16 divisors (see below), whose sum is σ = 69369600. Its totient is φ = 23412024.

The previous prime is 40971221. The next prime is 40971233. The reversal of 40971231 is 13217904.

It is not a de Polignac number, because 40971231 - 2¹¹ = 40969183 is a prime.

It is a super-2 number, since 2×40971231² = 3357283539310722, which contains 22 as substring.

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

It is a junction number, because it is equal to n+sod(n) for n = 40971195 and 40971204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40971233) 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, 108201 + ... + 108578.

It is an arithmetic number, because the mean of its divisors is an integer number (4335600).

Almost surely, 2^40971231 is an apocalyptic number.

40971231 is a deficient number, since it is larger than the sum of its proper divisors (28398369).

40971231 is a wasteful number, since it uses less digits than its factorization.

40971231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 216795 (or 216789 counting only the distinct ones).

The product of its (nonzero) digits is 1512, while the sum is 27.

The square root of 40971231 is about 6400.8773617372. The cubic root of 40971231 is about 344.7410533281.

The spelling of 40971231 in words is "forty million, nine hundred seventy-one thousand, two hundred thirty-one".