11311312001 has 16 divisors (see below), whose sum is σ = 12461589888. Its totient is φ = 10181808000.

The previous prime is 11311311941. The next prime is 11311312037. The reversal of 11311312001 is 10021311311.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 11311312001 - 2¹⁴ = 11311295617 is a prime.

It is not an unprimeable number, because it can be changed into a prime (11311312601) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 509015 + ... + 530771.

It is an arithmetic number, because the mean of its divisors is an integer number (778849368).

Almost surely, 2^11311312001 is an apocalyptic number.

11311312001 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

11311312001 is a deficient number, since it is larger than the sum of its proper divisors (1150277887).

11311312001 is a wasteful number, since it uses less digits than its factorization.

11311312001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22232.

The product of its (nonzero) digits is 18, while the sum is 14.

Adding to 11311312001 its reverse (10021311311), we get a palindrome (21332623312).

The spelling of 11311312001 in words is "eleven billion, three hundred eleven million, three hundred twelve thousand, one".