40155550031 has 4 divisors (see below), whose sum is σ = 41540224200. Its totient is φ = 38770875864.

The previous prime is 40155549983. The next prime is 40155550051. The reversal of 40155550031 is 13005555104.

40155550031 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 40155550031 - 2¹⁴ = 40155533647 is a prime.

It is a super-2 number, since 2×40155550031² (a number of 22 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (29), and also a Moran number because the ratio is a prime number: 1384674139 = 40155550031 / (4 + 0 + 1 + 5 + 5 + 5 + 5 + 0 + 0 + 3 + 1).

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 40155549976 and 40155550003.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40155550051) 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, 692337041 + ... + 692337098.

It is an arithmetic number, because the mean of its divisors is an integer number (10385056050).

Almost surely, 2^40155550031 is an apocalyptic number.

40155550031 is a deficient number, since it is larger than the sum of its proper divisors (1384674169).

40155550031 is a wasteful number, since it uses less digits than its factorization.

40155550031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1384674168.

The product of its (nonzero) digits is 7500, while the sum is 29.

The spelling of 40155550031 in words is "forty billion, one hundred fifty-five million, five hundred fifty thousand, thirty-one".