1331504134 has 4 divisors (see below), whose sum is σ = 1997256204. Its totient is φ = 665752066.

The previous prime is 1331504113. The next prime is 1331504143. The reversal of 1331504134 is 4314051331.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 4314051331 = 263 ⋅16403237.

It is a junction number, because it is equal to n+sod(n) for n = 1331504099 and 1331504108.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 332876032 + ... + 332876035.

It is an arithmetic number, because the mean of its divisors is an integer number (499314051).

Almost surely, 2^1331504134 is an apocalyptic number.

1331504134 is a deficient number, since it is larger than the sum of its proper divisors (665752070).

1331504134 is an equidigital number, since it uses as much as digits as its factorization.

1331504134 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 665752069.

The product of its (nonzero) digits is 2160, while the sum is 25.

The square root of 1331504134 is about 36489.7812270778. The cubic root of 1331504134 is about 1100.1388623593.

Adding to 1331504134 its reverse (4314051331), we get a palindrome (5645555465).

The spelling of 1331504134 in words is "one billion, three hundred thirty-one million, five hundred four thousand, one hundred thirty-four".