1211310342 has 32 divisors (see below), whose sum is σ = 2936511360. Its totient is φ = 367063560.

The previous prime is 1211310319. The next prime is 1211310391. The reversal of 1211310342 is 2430131121.

1211310342 is a `hidden beast` number, since 1 + 2 + 11 + 310 + 342 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1019028 + ... + 1020215.

It is an arithmetic number, because the mean of its divisors is an integer number (91765980).

Almost surely, 2^1211310342 is an apocalyptic number.

1211310342 is an abundant number, since it is smaller than the sum of its proper divisors (1725201018).

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

1211310342 is a wasteful number, since it uses less digits than its factorization.

1211310342 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2039265 (or 2039259 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

The square root of 1211310342 is about 34803.8840073920. The cubic root of 1211310342 is about 1065.9867545731.

Adding to 1211310342 its reverse (2430131121), we get a palindrome (3641441463).

The spelling of 1211310342 in words is "one billion, two hundred eleven million, three hundred ten thousand, three hundred forty-two".