40120522031 has 4 divisors (see below), whose sum is σ = 40141088064. Its totient is φ = 40099956000.

The previous prime is 40120522009. The next prime is 40120522061. The reversal of 40120522031 is 13022502104.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-40120522031 is a prime.

It is a super-2 number, since 2×40120522031² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 40120521994 and 40120522012.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40120522061) 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, 10280090 + ... + 10283991.

It is an arithmetic number, because the mean of its divisors is an integer number (10035272016).

Almost surely, 2^40120522031 is an apocalyptic number.

40120522031 is a deficient number, since it is larger than the sum of its proper divisors (20566033).

40120522031 is a wasteful number, since it uses less digits than its factorization.

40120522031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20566032.

The product of its (nonzero) digits is 480, while the sum is 20.

The spelling of 40120522031 in words is "forty billion, one hundred twenty million, five hundred twenty-two thousand, thirty-one".