40031155 has 8 divisors (see below), whose sum is σ = 50126112. Its totient is φ = 30632448.

The previous prime is 40031113. The next prime is 40031171. The reversal of 40031155 is 55113004.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 40031155 - 2¹¹ = 40029107 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 173934 + ... + 174163.

It is an arithmetic number, because the mean of its divisors is an integer number (6265764).

Almost surely, 2^40031155 is an apocalyptic number.

40031155 is a deficient number, since it is larger than the sum of its proper divisors (10094957).

40031155 is a wasteful number, since it uses less digits than its factorization.

40031155 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 348125.

The product of its (nonzero) digits is 300, while the sum is 19.

The square root of 40031155 is about 6327.0178599400. The cubic root of 40031155 is about 342.0839567941.

Adding to 40031155 its reverse (55113004), we get a palindrome (95144159).

It can be divided in two parts, 40031 and 155, that added together give a triangular number (40186 = T₂₈₃).

The spelling of 40031155 in words is "forty million, thirty-one thousand, one hundred fifty-five".