40623531031220 has 12 divisors (see below), whose sum is σ = 85309415165604. Its totient is φ = 16249412412480.

The previous prime is 40623531031211. The next prime is 40623531031241. The reversal of 40623531031220 is 2213013532604.

It can be written as a sum of positive squares in 2 ways, for example, as 27922304632336 + 12701226398884 = 5284156^2 + 3563878^2 .

It is a super-2 number, since 2×40623531031220² (a number of 28 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1015588275761 + ... + 1015588275800.

It is an arithmetic number, because the mean of its divisors is an integer number (7109117930467).

Almost surely, 2^{40623531031220} is an apocalyptic number.

It is an amenable number.

40623531031220 is an abundant number, since it is smaller than the sum of its proper divisors (44685884134384).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

40623531031220 is a wasteful number, since it uses less digits than its factorization.

40623531031220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2031176551570 (or 2031176551568 counting only the distinct ones).

The product of its (nonzero) digits is 25920, while the sum is 32.

Adding to 40623531031220 its reverse (2213013532604), we get a palindrome (42836544563824).

The spelling of 40623531031220 in words is "forty trillion, six hundred twenty-three billion, five hundred thirty-one million, thirty-one thousand, two hundred twenty".