1231441434 has 16 divisors (see below), whose sum is σ = 2736536640. Its totient is φ = 410480460.

The previous prime is 1231441429. The next prime is 1231441447. The reversal of 1231441434 is 4341441321.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a junction number, because it is equal to n+sod(n) for n = 1231441398 and 1231441407.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11402182 + ... + 11402289.

It is an arithmetic number, because the mean of its divisors is an integer number (171033540).

Almost surely, 2^1231441434 is an apocalyptic number.

1231441434 is an abundant number, since it is smaller than the sum of its proper divisors (1505095206).

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

1231441434 is a wasteful number, since it uses less digits than its factorization.

1231441434 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22804482 (or 22804476 counting only the distinct ones).

The product of its digits is 4608, while the sum is 27.

The square root of 1231441434 is about 35091.8998345772. The cubic root of 1231441434 is about 1071.8596461054.

Adding to 1231441434 its reverse (4341441321), we get a palindrome (5572882755).

The spelling of 1231441434 in words is "one billion, two hundred thirty-one million, four hundred forty-one thousand, four hundred thirty-four".