1231131114 has 24 divisors (see below), whose sum is σ = 2668530852. Its totient is φ = 410210880.

The previous prime is 1231131107. The next prime is 1231131119. The reversal of 1231131114 is 4111311321.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 1230957225 + 173889 = 35085^2 + 417^2 .

It is a Harshad number since it is a multiple of its sum of digits (18).

It is not an unprimeable number, because it can be changed into a prime (1231131119) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 36862 + ... + 61814.

Almost surely, 2^1231131114 is an apocalyptic number.

1231131114 is an abundant number, since it is smaller than the sum of its proper divisors (1437399738).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1231131114 is a wasteful number, since it uses less digits than its factorization.

1231131114 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27702 (or 27699 counting only the distinct ones).

The product of its digits is 72, while the sum is 18.

The square root of 1231131114 is about 35087.4780227933. The cubic root of 1231131114 is about 1071.7696032717.

Adding to 1231131114 its reverse (4111311321), we get a palindrome (5342442435).

The spelling of 1231131114 in words is "one billion, two hundred thirty-one million, one hundred thirty-one thousand, one hundred fourteen".