1540514231 has 8 divisors (see below), whose sum is σ = 1551762528. Its totient is φ = 1529280000.

The previous prime is 1540514219. The next prime is 1540514233. The reversal of 1540514231 is 1324150451.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1540514231 - 2¹⁰ = 1540513207 is a prime.

It is a super-2 number, since 2×1540514231² = 4746368191827042722, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1540514231.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1540514233) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 323951 + ... + 328671.

It is an arithmetic number, because the mean of its divisors is an integer number (193970316).

Almost surely, 2^1540514231 is an apocalyptic number.

1540514231 is a deficient number, since it is larger than the sum of its proper divisors (11248297).

1540514231 is a wasteful number, since it uses less digits than its factorization.

1540514231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7033.

The product of its (nonzero) digits is 2400, while the sum is 26.

The square root of 1540514231 is about 39249.3851034637. The cubic root of 1540514231 is about 1154.9288715154.

Adding to 1540514231 its reverse (1324150451), we get a palindrome (2864664682).

The spelling of 1540514231 in words is "one billion, five hundred forty million, five hundred fourteen thousand, two hundred thirty-one".