113231401421 has 2 divisors, whose sum is σ = 113231401422. Its totient is φ = 113231401420.

The previous prime is 113231401411. The next prime is 113231401457. The reversal of 113231401421 is 124104132311.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 92544332521 + 20687068900 = 304211^2 + 143830^2 .

It is a cyclic number.

It is not a de Polignac number, because 113231401421 - 2¹⁰ = 113231400397 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (113231401411) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 56615700710 + 56615700711.

It is an arithmetic number, because the mean of its divisors is an integer number (56615700711).

Almost surely, 2^113231401421 is an apocalyptic number.

It is an amenable number.

113231401421 is a deficient number, since it is larger than the sum of its proper divisors (1).

113231401421 is an equidigital number, since it uses as much as digits as its factorization.

113231401421 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 576, while the sum is 23.

Adding to 113231401421 its reverse (124104132311), we get a palindrome (237335533732).

The spelling of 113231401421 in words is "one hundred thirteen billion, two hundred thirty-one million, four hundred one thousand, four hundred twenty-one".