2001115153231 has 2 divisors, whose sum is σ = 2001115153232. Its totient is φ = 2001115153230.

The previous prime is 2001115153187. The next prime is 2001115153307. The reversal of 2001115153231 is 1323515111002.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2001115153231 - 2³¹ = 1998967669583 is a prime.

It is a super-2 number, since 2×2001115153231² (a number of 25 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 2001115153196 and 2001115153205.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2001125153231) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1000557576615 + 1000557576616.

It is an arithmetic number, because the mean of its divisors is an integer number (1000557576616).

Almost surely, 2^{2001115153231} is an apocalyptic number.

2001115153231 is a deficient number, since it is larger than the sum of its proper divisors (1).

2001115153231 is an equidigital number, since it uses as much as digits as its factorization.

2001115153231 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 900, while the sum is 25.

The spelling of 2001115153231 in words is "two trillion, one billion, one hundred fifteen million, one hundred fifty-three thousand, two hundred thirty-one".