1601113051231 has 4 divisors (see below), whose sum is σ = 1601115928000. Its totient is φ = 1601110174464.

The previous prime is 1601113051147. The next prime is 1601113051303. The reversal of 1601113051231 is 1321503111061.

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 1601113051231 - 2²⁹ = 1600576180319 is a prime.

It is a super-2 number, since 2×1601113051231² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1601113051196 and 1601113051205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1601113051331) 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, 306786 + ... + 1815583.

It is an arithmetic number, because the mean of its divisors is an integer number (400278982000).

Almost surely, 2^{1601113051231} is an apocalyptic number.

1601113051231 is a deficient number, since it is larger than the sum of its proper divisors (2876769).

1601113051231 is an equidigital number, since it uses as much as digits as its factorization.

1601113051231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2876768.

The product of its (nonzero) digits is 540, while the sum is 25.

Adding to 1601113051231 its reverse (1321503111061), we get a palindrome (2922616162292).

The spelling of 1601113051231 in words is "one trillion, six hundred one billion, one hundred thirteen million, fifty-one thousand, two hundred thirty-one".