1211315234 has 16 divisors (see below), whose sum is σ = 1866697056. Its totient is φ = 589168800.

The previous prime is 1211315233. The next prime is 1211315243. The reversal of 1211315234 is 4325131121.

It is a super-2 number, since 2×1211315234² = 2934569192240949512, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1211315233) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7169 + ... + 49739.

It is an arithmetic number, because the mean of its divisors is an integer number (116668566).

Almost surely, 2^1211315234 is an apocalyptic number.

1211315234 is a deficient number, since it is larger than the sum of its proper divisors (655381822).

1211315234 is a wasteful number, since it uses less digits than its factorization.

1211315234 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42961.

The product of its digits is 720, while the sum is 23.

The square root of 1211315234 is about 34803.9542868336. The cubic root of 1211315234 is about 1065.9881896031.

Adding to 1211315234 its reverse (4325131121), we get a palindrome (5536446355).

The spelling of 1211315234 in words is "one billion, two hundred eleven million, three hundred fifteen thousand, two hundred thirty-four".