131201001001 has 8 divisors (see below), whose sum is σ = 153004083200. Its totient is φ = 112458000564.

The previous prime is 131201000993. The next prime is 131201001011. The reversal of 131201001001 is 100100102131.

It is not a de Polignac number, because 131201001001 - 2³ = 131201000993 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (131201001011) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 191254761 + ... + 191255446.

It is an arithmetic number, because the mean of its divisors is an integer number (19125510400).

Almost surely, 2^131201001001 is an apocalyptic number.

It is an amenable number.

131201001001 is a deficient number, since it is larger than the sum of its proper divisors (21803082199).

131201001001 is an frugal number, since it uses more digits than its factorization.

131201001001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 382510228 (or 382510214 counting only the distinct ones).

The product of its (nonzero) digits is 6, while the sum is 10.

Adding to 131201001001 its reverse (100100102131), we get a palindrome (231301103132).

The spelling of 131201001001 in words is "one hundred thirty-one billion, two hundred one million, one thousand, one".