1214421231 has 32 divisors (see below), whose sum is σ = 1734075648. Its totient is φ = 753338880.

The previous prime is 1214421227. The next prime is 1214421239. The reversal of 1214421231 is 1321244121.

It is not a de Polignac number, because 1214421231 - 2² = 1214421227 is a prime.

It is a super-2 number, since 2×1214421231² = 2949637852607110722, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1214421198 and 1214421207.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1214421239) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2884401 + ... + 2884821.

It is an arithmetic number, because the mean of its divisors is an integer number (54189864).

Almost surely, 2^1214421231 is an apocalyptic number.

1214421231 is a deficient number, since it is larger than the sum of its proper divisors (519654417).

1214421231 is a wasteful number, since it uses less digits than its factorization.

1214421231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 951.

The product of its digits is 384, while the sum is 21.

The square root of 1214421231 is about 34848.5470428826. The cubic root of 1214421231 is about 1066.8985307261.

Adding to 1214421231 its reverse (1321244121), we get a palindrome (2535665352).

The spelling of 1214421231 in words is "one billion, two hundred fourteen million, four hundred twenty-one thousand, two hundred thirty-one".