1540134311 has 4 divisors (see below), whose sum is σ = 1575951432. Its totient is φ = 1504317192.

The previous prime is 1540134301. The next prime is 1540134313. The reversal of 1540134311 is 1134310451.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1134310451 = 2693 ⋅421207.

It is a cyclic number.

It is not a de Polignac number, because 1540134311 - 2¹⁸ = 1539872167 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1540134313) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 17908496 + ... + 17908581.

It is an arithmetic number, because the mean of its divisors is an integer number (393987858).

Almost surely, 2^1540134311 is an apocalyptic number.

1540134311 is a deficient number, since it is larger than the sum of its proper divisors (35817121).

1540134311 is an equidigital number, since it uses as much as digits as its factorization.

1540134311 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35817120.

The product of its (nonzero) digits is 720, while the sum is 23.

The square root of 1540134311 is about 39244.5449839847. The cubic root of 1540134311 is about 1154.8339212615.

Adding to 1540134311 its reverse (1134310451), we get a palindrome (2674444762).

The spelling of 1540134311 in words is "one billion, five hundred forty million, one hundred thirty-four thousand, three hundred eleven".