1211324131 has 8 divisors (see below), whose sum is σ = 1241578800. Its totient is φ = 1181103360.

The previous prime is 1211324123. The next prime is 1211324159. The reversal of 1211324131 is 1314231121.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1211324131 - 2³ = 1211324123 is a prime.

It is a super-2 number, since 2×1211324131² = 2934612300685810322, 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 = 1211324099 and 1211324108.

It is not an unprimeable number, because it can be changed into a prime (1211324111) 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, 73675 + ... + 88603.

It is an arithmetic number, because the mean of its divisors is an integer number (155197350).

Almost surely, 2^1211324131 is an apocalyptic number.

1211324131 is a deficient number, since it is larger than the sum of its proper divisors (30254669).

1211324131 is a wasteful number, since it uses less digits than its factorization.

1211324131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16949.

The product of its digits is 144, while the sum is 19.

The square root of 1211324131 is about 34804.0821025350. The cubic root of 1211324131 is about 1065.9907994588.

Adding to 1211324131 its reverse (1314231121), we get a palindrome (2525555252).

The spelling of 1211324131 in words is "one billion, two hundred eleven million, three hundred twenty-four thousand, one hundred thirty-one".