2031401333231 has 4 divisors (see below), whose sum is σ = 2119723130352. Its totient is φ = 1943079536112.

The previous prime is 2031401333149. The next prime is 2031401333239. The reversal of 2031401333231 is 1323331041302.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2031401333231 is a prime.

It is a super-2 number, since 2×2031401333231² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 2031401333231.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2031401333239) 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, 44160898526 + ... + 44160898571.

It is an arithmetic number, because the mean of its divisors is an integer number (529930782588).

Almost surely, 2^{2031401333231} is an apocalyptic number.

2031401333231 is a deficient number, since it is larger than the sum of its proper divisors (88321797121).

2031401333231 is an equidigital number, since it uses as much as digits as its factorization.

2031401333231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 88321797120.

The product of its (nonzero) digits is 3888, while the sum is 26.

Adding to 2031401333231 its reverse (1323331041302), we get a palindrome (3354732374533).

It can be divided in two parts, 2031401 and 333231, that added together give a palindrome (2364632).

The spelling of 2031401333231 in words is "two trillion, thirty-one billion, four hundred one million, three hundred thirty-three thousand, two hundred thirty-one".