2001205554031 has 2 divisors, whose sum is σ = 2001205554032. Its totient is φ = 2001205554030.

The previous prime is 2001205553989. The next prime is 2001205554053. The reversal of 2001205554031 is 1304555021002.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2001205554031 is a prime.

It is a super-2 number, since 2×2001205554031² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2001205554631) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1000602777015 + 1000602777016.

It is an arithmetic number, because the mean of its divisors is an integer number (1000602777016).

Almost surely, 2^{2001205554031} is an apocalyptic number.

2001205554031 is a deficient number, since it is larger than the sum of its proper divisors (1).

2001205554031 is an equidigital number, since it uses as much as digits as its factorization.

2001205554031 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6000, while the sum is 28.

The spelling of 2001205554031 in words is "two trillion, one billion, two hundred five million, five hundred fifty-four thousand, thirty-one".