1231131434 has 8 divisors (see below), whose sum is σ = 1988750820. Its totient is φ = 568214496.

The previous prime is 1231131413. The next prime is 1231131443. The reversal of 1231131434 is 4341311321.

It can be written as a sum of positive squares in 2 ways, for example, as 1228292209 + 2839225 = 35047^2 + 1685^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 23675579 + ... + 23675630.

Almost surely, 2^1231131434 is an apocalyptic number.

1231131434 is a deficient number, since it is larger than the sum of its proper divisors (757619386).

1231131434 is a wasteful number, since it uses less digits than its factorization.

1231131434 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47351224.

The product of its digits is 864, while the sum is 23.

The square root of 1231131434 is about 35087.4825828243. The cubic root of 1231131434 is about 1071.7696961310.

Adding to 1231131434 its reverse (4341311321), we get a palindrome (5572442755).

The spelling of 1231131434 in words is "one billion, two hundred thirty-one million, one hundred thirty-one thousand, four hundred thirty-four".