1540031132321 has 8 divisors (see below), whose sum is σ = 1691160017088. Its totient is φ = 1390756590000.

The previous prime is 1540031132257. The next prime is 1540031132329. The reversal of 1540031132321 is 1232311300451.

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 1540031132321 - 2⁶ = 1540031132257 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1540031132329) 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, 463583870 + ... + 463587191.

It is an arithmetic number, because the mean of its divisors is an integer number (211395002136).

Almost surely, 2^{1540031132321} is an apocalyptic number.

1540031132321 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1540031132321 is a deficient number, since it is larger than the sum of its proper divisors (151128884767).

1540031132321 is a wasteful number, since it uses less digits than its factorization.

1540031132321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 927171223.

The product of its (nonzero) digits is 2160, while the sum is 26.

Adding to 1540031132321 its reverse (1232311300451), we get a palindrome (2772342432772).

The spelling of 1540031132321 in words is "one trillion, five hundred forty billion, thirty-one million, one hundred thirty-two thousand, three hundred twenty-one".