1212432231 has 16 divisors (see below), whose sum is σ = 1714224384. Its totient is φ = 759606144.

The previous prime is 1212432229. The next prime is 1212432239. The reversal of 1212432231 is 1322342121.

It is not a de Polignac number, because 1212432231 - 2¹ = 1212432229 is a prime.

It is a super-2 number, since 2×1212432231² = 2939983829535274722, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1212432198 and 1212432207.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1212432239) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 17430 + ... + 52236.

It is an arithmetic number, because the mean of its divisors is an integer number (107139024).

Almost surely, 2^1212432231 is an apocalyptic number.

1212432231 is a deficient number, since it is larger than the sum of its proper divisors (501792153).

1212432231 is a wasteful number, since it uses less digits than its factorization.

1212432231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35510.

The product of its digits is 576, while the sum is 21.

The square root of 1212432231 is about 34819.9975732337. The cubic root of 1212432231 is about 1066.3157508540.

Adding to 1212432231 its reverse (1322342121), we get a palindrome (2534774352).

The spelling of 1212432231 in words is "one billion, two hundred twelve million, four hundred thirty-two thousand, two hundred thirty-one".