1231834534 has 16 divisors (see below), whose sum is σ = 2115175968. Its totient is φ = 527064192.

The previous prime is 1231834531. The next prime is 1231834553. The reversal of 1231834534 is 4354381321.

It is a self number, because there is not a number n which added to its sum of digits gives 1231834534.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1231834531) 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, 63187 + ... + 80350.

It is an arithmetic number, because the mean of its divisors is an integer number (132198498).

Almost surely, 2^1231834534 is an apocalyptic number.

1231834534 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

1231834534 is a deficient number, since it is larger than the sum of its proper divisors (883341434).

1231834534 is a wasteful number, since it uses less digits than its factorization.

1231834534 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 144159.

The product of its digits is 34560, while the sum is 34.

The square root of 1231834534 is about 35097.5003953273. The cubic root of 1231834534 is about 1071.9736867706.

The spelling of 1231834534 in words is "one billion, two hundred thirty-one million, eight hundred thirty-four thousand, five hundred thirty-four".