1231011134 has 8 divisors (see below), whose sum is σ = 1847593560. Its totient is φ = 615146616.

The previous prime is 1231011113. The next prime is 1231011143. The reversal of 1231011134 is 4311101321.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 175169 + ... + 182060.

It is an arithmetic number, because the mean of its divisors is an integer number (230949195).

Almost surely, 2^1231011134 is an apocalyptic number.

1231011134 is a deficient number, since it is larger than the sum of its proper divisors (616582426).

1231011134 is a wasteful number, since it uses less digits than its factorization.

1231011134 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 358954.

The product of its (nonzero) digits is 72, while the sum is 17.

The square root of 1231011134 is about 35085.7682543792. The cubic root of 1231011134 is about 1071.7347856710.

Adding to 1231011134 its reverse (4311101321), we get a palindrome (5542112455).

The spelling of 1231011134 in words is "one billion, two hundred thirty-one million, eleven thousand, one hundred thirty-four".