40540145031 has 16 divisors (see below), whose sum is σ = 60206335200. Its totient is φ = 26960675904.

The previous prime is 40540145027. The next prime is 40540145039. The reversal of 40540145031 is 13054104504.

It is a happy number.

40540145031 is a `hidden beast` number, since 40 + 540 + 1 + 4 + 50 + 31 = 666.

It is not a de Polignac number, because 40540145031 - 2² = 40540145027 is a prime.

It is a super-2 number, since 2×40540145031² (a number of 22 digits) 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 = 40540144986 and 40540145004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40540145039) 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, 1824516 + ... + 1846601.

It is an arithmetic number, because the mean of its divisors is an integer number (3762895950).

Almost surely, 2^40540145031 is an apocalyptic number.

40540145031 is a deficient number, since it is larger than the sum of its proper divisors (19666190169).

40540145031 is a wasteful number, since it uses less digits than its factorization.

40540145031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3671535 (or 3671529 counting only the distinct ones).

The product of its (nonzero) digits is 4800, while the sum is 27.

Adding to 40540145031 its reverse (13054104504), we get a palindrome (53594249535).

The spelling of 40540145031 in words is "forty billion, five hundred forty million, one hundred forty-five thousand, thirty-one".