36311143021 has 4 divisors (see below), whose sum is σ = 36311531200. Its totient is φ = 36310754844.

The previous prime is 36311142971. The next prime is 36311143069. The reversal of 36311143021 is 12034111363.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 36311143021 - 2⁷ = 36311142893 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 (36311173021) 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, 41740 + ... + 272698.

It is an arithmetic number, because the mean of its divisors is an integer number (9077882800).

Almost surely, 2^36311143021 is an apocalyptic number.

It is an amenable number.

36311143021 is a deficient number, since it is larger than the sum of its proper divisors (388179).

36311143021 is a wasteful number, since it uses less digits than its factorization.

36311143021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 388178.

The product of its (nonzero) digits is 1296, while the sum is 25.

Adding to 36311143021 its reverse (12034111363), we get a palindrome (48345254384).

The spelling of 36311143021 in words is "thirty-six billion, three hundred eleven million, one hundred forty-three thousand, twenty-one".