1231490834 has 24 divisors (see below), whose sum is σ = 2185256880. Its totient is φ = 518833896.

The previous prime is 1231490831. The next prime is 1231490849. The reversal of 1231490834 is 4380941321.

It is a junction number, because it is equal to n+sod(n) for n = 1231490794 and 1231490803.

It is not an unprimeable number, because it can be changed into a prime (1231490831) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 100712 + ... + 112275.

It is an arithmetic number, because the mean of its divisors is an integer number (91052370).

Almost surely, 2^1231490834 is an apocalyptic number.

1231490834 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

1231490834 is a deficient number, since it is larger than the sum of its proper divisors (953766046).

1231490834 is a wasteful number, since it uses less digits than its factorization.

1231490834 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 213062 (or 213055 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 35.

The square root of 1231490834 is about 35092.6036936560. The cubic root of 1231490834 is about 1071.8739786746.

The spelling of 1231490834 in words is "one billion, two hundred thirty-one million, four hundred ninety thousand, eight hundred thirty-four".