1201131001 has 24 divisors (see below), whose sum is σ = 1441409984. Its totient is φ = 980385120.

The previous prime is 1201130989. The next prime is 1201131031. The reversal of 1201131001 is 1001311021.

It is not a de Polignac number, because 1201131001 - 2⁷ = 1201130873 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1201131031) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1025146 + ... + 1026316.

Almost surely, 2^1201131001 is an apocalyptic number.

It is an amenable number.

1201131001 is a deficient number, since it is larger than the sum of its proper divisors (240278983).

1201131001 is a wasteful number, since it uses less digits than its factorization.

1201131001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1501 (or 1478 counting only the distinct ones).

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

The square root of 1201131001 is about 34657.3368999985. The cubic root of 1201131001 is about 1062.9923165478.

Adding to 1201131001 its reverse (1001311021), we get a palindrome (2202442022).

The spelling of 1201131001 in words is "one billion, two hundred one million, one hundred thirty-one thousand, one".