1540311332 has 24 divisors (see below), whose sum is σ = 3163884864. Its totient is φ = 642291552.

The previous prime is 1540311319. The next prime is 1540311347. The reversal of 1540311332 is 2331130451.

It is a super-2 number, since 2×1540311332² = 4745117998975228448, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1540311298 and 1540311307.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 742358 + ... + 744429.

It is an arithmetic number, because the mean of its divisors is an integer number (131828536).

Almost surely, 2^1540311332 is an apocalyptic number.

It is an amenable number.

1540311332 is an abundant number, since it is smaller than the sum of its proper divisors (1623573532).

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

1540311332 is a wasteful number, since it uses less digits than its factorization.

1540311332 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1486835 (or 1486833 counting only the distinct ones).

The product of its (nonzero) digits is 1080, while the sum is 23.

The square root of 1540311332 is about 39246.8002772201. The cubic root of 1540311332 is about 1154.8781645941.

Adding to 1540311332 its reverse (2331130451), we get a palindrome (3871441783).

The spelling of 1540311332 in words is "one billion, five hundred forty million, three hundred eleven thousand, three hundred thirty-two".