1201131019 has 16 divisors (see below), whose sum is σ = 1359652320. Its totient is φ = 1051061760.

The previous prime is 1201130989. The next prime is 1201131031. The reversal of 1201131019 is 9101311021.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1201131019 is a prime.

It is a super-2 number, since 2×1201131019² = 2885431449607956722, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1201130987 and 1201131005.

It is not an unprimeable number, because it can be changed into a prime (1201131049) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 101917 + ... + 113089.

It is an arithmetic number, because the mean of its divisors is an integer number (84978270).

Almost surely, 2^1201131019 is an apocalyptic number.

1201131019 is a deficient number, since it is larger than the sum of its proper divisors (158521301).

1201131019 is a wasteful number, since it uses less digits than its factorization.

1201131019 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11550.

The product of its (nonzero) digits is 54, while the sum is 19.

The square root of 1201131019 is about 34657.3371596838. The cubic root of 1201131019 is about 1062.9923218578.

The spelling of 1201131019 in words is "one billion, two hundred one million, one hundred thirty-one thousand, nineteen".