1231214231 has 8 divisors (see below), whose sum is σ = 1395708720. Its totient is φ = 1076689152.

The previous prime is 1231214203. The next prime is 1231214251. The reversal of 1231214231 is 1324121321.

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-1231214231 is a prime.

It is a super-2 number, since 2×1231214231² = 3031776965233842722, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1231214251) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2492090 + ... + 2492583.

It is an arithmetic number, because the mean of its divisors is an integer number (174463590).

Almost surely, 2^1231214231 is an apocalyptic number.

1231214231 is a deficient number, since it is larger than the sum of its proper divisors (164494489).

1231214231 is a wasteful number, since it uses less digits than its factorization.

1231214231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4984705.

The product of its digits is 288, while the sum is 20.

The square root of 1231214231 is about 35088.6624281975. The cubic root of 1231214231 is about 1071.7937220863.

Adding to 1231214231 its reverse (1324121321), we get a palindrome (2555335552).

The spelling of 1231214231 in words is "one billion, two hundred thirty-one million, two hundred fourteen thousand, two hundred thirty-one".