1231400004011 has 4 divisors (see below), whose sum is σ = 1231466509224. Its totient is φ = 1231333498800.

The previous prime is 1231400003927. The next prime is 1231400004019. The reversal of 1231400004011 is 1104000041321.

It is a happy number.

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 1231400004011 - 2²⁶ = 1231332895147 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1231400004019) 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, 33224825 + ... + 33261866.

It is an arithmetic number, because the mean of its divisors is an integer number (307866627306).

Almost surely, 2^{1231400004011} is an apocalyptic number.

1231400004011 is a deficient number, since it is larger than the sum of its proper divisors (66505213).

1231400004011 is an equidigital number, since it uses as much as digits as its factorization.

1231400004011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 66505212.

The product of its (nonzero) digits is 96, while the sum is 17.

Adding to 1231400004011 its reverse (1104000041321), we get a palindrome (2335400045332).

The spelling of 1231400004011 in words is "one trillion, two hundred thirty-one billion, four hundred million, four thousand, eleven".