2001131403245 has 32 divisors (see below), whose sum is σ = 2590146284544. Its totient is φ = 1475435059200.

The previous prime is 2001131403239. The next prime is 2001131403259. The reversal of 2001131403245 is 5423041311002.

It is a happy number.

It is not a de Polignac number, because 2001131403245 - 2⁸ = 2001131402989 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 170579030 + ... + 170590760.

It is an arithmetic number, because the mean of its divisors is an integer number (80942071392).

Almost surely, 2^{2001131403245} is an apocalyptic number.

It is an amenable number.

2001131403245 is a deficient number, since it is larger than the sum of its proper divisors (589014881299).

2001131403245 is a wasteful number, since it uses less digits than its factorization.

2001131403245 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15653.

The product of its (nonzero) digits is 2880, while the sum is 26.

Adding to 2001131403245 its reverse (5423041311002), we get a palindrome (7424172714247).

The spelling of 2001131403245 in words is "two trillion, one billion, one hundred thirty-one million, four hundred three thousand, two hundred forty-five".