1231340058 has 72 divisors (see below), whose sum is σ = 2976092028. Its totient is φ = 365750784.

The previous prime is 1231340051. The next prime is 1231340063. The reversal of 1231340058 is 8500431321.

It is a happy number.

It can be written as a sum of positive squares in 6 ways, for example, as 822370329 + 408969729 = 28677^2 + 20223^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1231340051) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 193666 + ... + 199922.

Almost surely, 2^1231340058 is an apocalyptic number.

1231340058 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 1231340058, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1488046014).

1231340058 is an abundant number, since it is smaller than the sum of its proper divisors (1744751970).

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

1231340058 is a wasteful number, since it uses less digits than its factorization.

1231340058 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6336 (or 6304 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 27.

The square root of 1231340058 is about 35090.4553689461. The cubic root of 1231340058 is about 1071.8302323841.

Adding to 1231340058 its reverse (8500431321), we get a palindrome (9731771379).

The spelling of 1231340058 in words is "one billion, two hundred thirty-one million, three hundred forty thousand, fifty-eight".