1234311231 has 64 divisors (see below), whose sum is σ = 1904256000. Its totient is φ = 706185216.

The previous prime is 1234311181. The next prime is 1234311241. The reversal of 1234311231 is 1321134321.

It is not a de Polignac number, because 1234311231 - 2⁷ = 1234311103 is a prime.

It is a super-2 number, since 2×1234311231² = 3047048429945470722, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1234311198 and 1234311207.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1234311241) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 6202470 + ... + 6202668.

It is an arithmetic number, because the mean of its divisors is an integer number (29754000).

Almost surely, 2^1234311231 is an apocalyptic number.

1234311231 is a deficient number, since it is larger than the sum of its proper divisors (669944769).

1234311231 is a wasteful number, since it uses less digits than its factorization.

1234311231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 448.

The product of its digits is 432, while the sum is 21.

The square root of 1234311231 is about 35132.7657749856. The cubic root of 1234311231 is about 1072.6916340264.

Adding to 1234311231 its reverse (1321134321), we get a palindrome (2555445552).

The spelling of 1234311231 in words is "one billion, two hundred thirty-four million, three hundred eleven thousand, two hundred thirty-one".