1211311470 has 32 divisors (see below), whose sum is σ = 2920200192. Its totient is φ = 321566112.

The previous prime is 1211311403. The next prime is 1211311471. The reversal of 1211311470 is 741131121.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1211311471) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 83842 + ... + 97221.

It is an arithmetic number, because the mean of its divisors is an integer number (91256256).

Almost surely, 2^1211311470 is an apocalyptic number.

1211311470 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1211311470 is an abundant number, since it is smaller than the sum of its proper divisors (1708888722).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1211311470 is a wasteful number, since it uses less digits than its factorization.

1211311470 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 181296.

The product of its (nonzero) digits is 168, while the sum is 21.

The square root of 1211311470 is about 34803.9002124762. The cubic root of 1211311470 is about 1065.9870854634.

Adding to 1211311470 its reverse (741131121), we get a palindrome (1952442591).

The spelling of 1211311470 in words is "one billion, two hundred eleven million, three hundred eleven thousand, four hundred seventy".