40821123311 has 4 divisors (see below), whose sum is σ = 41924396952. Its totient is φ = 39717849672.

The previous prime is 40821123293. The next prime is 40821123319. The reversal of 40821123311 is 11332112804.

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 40821123311 - 2⁶ = 40821123247 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40821123319) 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, 551636765 + ... + 551636838.

It is an arithmetic number, because the mean of its divisors is an integer number (10481099238).

Almost surely, 2^40821123311 is an apocalyptic number.

40821123311 is a deficient number, since it is larger than the sum of its proper divisors (1103273641).

40821123311 is a wasteful number, since it uses less digits than its factorization.

40821123311 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1103273640.

The product of its (nonzero) digits is 1152, while the sum is 26.

The spelling of 40821123311 in words is "forty billion, eight hundred twenty-one million, one hundred twenty-three thousand, three hundred eleven".