1231023134 has 16 divisors (see below), whose sum is σ = 2042775936. Its totient is φ = 551674200.

The previous prime is 1231023133. The next prime is 1231023149. The reversal of 1231023134 is 4313201321.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1231023133) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 392492 + ... + 395615.

It is an arithmetic number, because the mean of its divisors is an integer number (127673496).

Almost surely, 2^1231023134 is an apocalyptic number.

1231023134 is a deficient number, since it is larger than the sum of its proper divisors (811752802).

1231023134 is a wasteful number, since it uses less digits than its factorization.

1231023134 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 788191.

The product of its (nonzero) digits is 432, while the sum is 20.

The square root of 1231023134 is about 35085.9392634713. The cubic root of 1231023134 is about 1071.7382681133.

Adding to 1231023134 its reverse (4313201321), we get a palindrome (5544224455).

The spelling of 1231023134 in words is "one billion, two hundred thirty-one million, twenty-three thousand, one hundred thirty-four".