1201113203231 has 4 divisors (see below), whose sum is σ = 1239858790464. Its totient is φ = 1162367616000.

The previous prime is 1201113203219. The next prime is 1201113203281. The reversal of 1201113203231 is 1323023111021.

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 1201113203231 - 2⁶ = 1201113203167 is a prime.

It is a super-2 number, since 2×1201113203231² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1201113203281) 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, 19372793570 + ... + 19372793631.

It is an arithmetic number, because the mean of its divisors is an integer number (309964697616).

Almost surely, 2^{1201113203231} is an apocalyptic number.

1201113203231 is a deficient number, since it is larger than the sum of its proper divisors (38745587233).

1201113203231 is an equidigital number, since it uses as much as digits as its factorization.

1201113203231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38745587232.

The product of its (nonzero) digits is 216, while the sum is 20.

Adding to 1201113203231 its reverse (1323023111021), we get a palindrome (2524136314252).

The spelling of 1201113203231 in words is "one trillion, two hundred one billion, one hundred thirteen million, two hundred three thousand, two hundred thirty-one".