1201332431001 has 4 divisors (see below), whose sum is σ = 1601776574672. Its totient is φ = 800888287332.

The previous prime is 1201332430999. The next prime is 1201332431003. The reversal of 1201332431001 is 1001342331021.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is an interprime number because it is at equal distance from previous prime (1201332430999) and next prime (1201332431003).

It is not a de Polignac number, because 1201332431001 - 2¹ = 1201332430999 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1201332431003) 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, 200222071831 + ... + 200222071836.

It is an arithmetic number, because the mean of its divisors is an integer number (400444143668).

Almost surely, 2^{1201332431001} is an apocalyptic number.

It is an amenable number.

1201332431001 is a deficient number, since it is larger than the sum of its proper divisors (400444143671).

1201332431001 is an equidigital number, since it uses as much as digits as its factorization.

1201332431001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 400444143670.

The product of its (nonzero) digits is 432, while the sum is 21.

Adding to 1201332431001 its reverse (1001342331021), we get a palindrome (2202674762022).

The spelling of 1201332431001 in words is "one trillion, two hundred one billion, three hundred thirty-two million, four hundred thirty-one thousand, one".