1156631214 has 16 divisors (see below), whose sum is σ = 2314811520. Its totient is φ = 385285560.

The previous prime is 1156631191. The next prime is 1156631237. The reversal of 1156631214 is 4121366511.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (1156631191) and next prime (1156631237).

It is a super-2 number, since 2×1156631214² = 2675591530398227592, which contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 54724 + ... + 72855.

It is an arithmetic number, because the mean of its divisors is an integer number (144675720).

Almost surely, 2^1156631214 is an apocalyptic number.

1156631214 is an abundant number, since it is smaller than the sum of its proper divisors (1158180306).

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

1156631214 is a wasteful number, since it uses less digits than its factorization.

1156631214 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 129095.

The product of its digits is 4320, while the sum is 30.

The square root of 1156631214 is about 34009.2812920238. The cubic root of 1156631214 is about 1049.6994495800.

Adding to 1156631214 its reverse (4121366511), we get a palindrome (5277997725).

The spelling of 1156631214 in words is "one billion, one hundred fifty-six million, six hundred thirty-one thousand, two hundred fourteen".