1231303134 has 16 divisors (see below), whose sum is σ = 2471696640. Its totient is φ = 408919320.

The previous prime is 1231303127. The next prime is 1231303169. The reversal of 1231303134 is 4313031321.

It is a super-2 number, since 2×1231303134² = 3032214815596443912, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1231303134.

It is a congruent number.

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, 377004 + ... + 380255.

It is an arithmetic number, because the mean of its divisors is an integer number (154481040).

Almost surely, 2^1231303134 is an apocalyptic number.

1231303134 is an abundant number, since it is smaller than the sum of its proper divisors (1240393506).

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

1231303134 is a wasteful number, since it uses less digits than its factorization.

1231303134 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 757535.

The product of its (nonzero) digits is 648, while the sum is 21.

The square root of 1231303134 is about 35089.9292390281. The cubic root of 1231303134 is about 1071.8195186757.

Adding to 1231303134 its reverse (4313031321), we get a palindrome (5544334455).

The spelling of 1231303134 in words is "one billion, two hundred thirty-one million, three hundred three thousand, one hundred thirty-four".