130031438 has 4 divisors (see below), whose sum is σ = 195047160. Its totient is φ = 65015718.

The previous prime is 130031437. The next prime is 130031449. The reversal of 130031438 is 834130031.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (130031437) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32507858 + ... + 32507861.

It is an arithmetic number, because the mean of its divisors is an integer number (48761790).

Almost surely, 2^130031438 is an apocalyptic number.

130031438 is a deficient number, since it is larger than the sum of its proper divisors (65015722).

130031438 is an equidigital number, since it uses as much as digits as its factorization.

130031438 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 65015721.

The product of its (nonzero) digits is 864, while the sum is 23.

The square root of 130031438 is about 11403.1328151522. The cubic root of 130031438 is about 506.6205341384.

Adding to 130031438 its reverse (834130031), we get a palindrome (964161469).

It can be divided in two parts, 13003 and 1438, that added together give a palindrome (14441).

The spelling of 130031438 in words is "one hundred thirty million, thirty-one thousand, four hundred thirty-eight".