1214031491 has 8 divisors (see below), whose sum is σ = 1236716544. Its totient is φ = 1191480840.

The previous prime is 1214031463. The next prime is 1214031493. The reversal of 1214031491 is 1941304121.

It is a happy number.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1214031491 is a prime.

It is a super-2 number, since 2×1214031491² = 2947744922279366162, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1214031491.

It is not an unprimeable number, because it can be changed into a prime (1214031493) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15275 + ... + 51588.

It is an arithmetic number, because the mean of its divisors is an integer number (154589568).

Almost surely, 2^1214031491 is an apocalyptic number.

1214031491 is a deficient number, since it is larger than the sum of its proper divisors (22685053).

1214031491 is an equidigital number, since it uses as much as digits as its factorization.

1214031491 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 67201.

The product of its (nonzero) digits is 864, while the sum is 26.

The square root of 1214031491 is about 34842.9546824032. The cubic root of 1214031491 is about 1066.7843864977.

The spelling of 1214031491 in words is "one billion, two hundred fourteen million, thirty-one thousand, four hundred ninety-one".