1540053201231 has 8 divisors (see below), whose sum is σ = 2281560298160. Its totient is φ = 1026702134136.

The previous prime is 1540053201199. The next prime is 1540053201233. The reversal of 1540053201231 is 1321023500451.

1540053201231 is a `hidden beast` number, since 1 + 5 + 4 + 0 + 0 + 532 + 0 + 123 + 1 = 666.

It is not a de Polignac number, because 1540053201231 - 2⁵ = 1540053201199 is a prime.

It is a super-2 number, since 2×1540053201231² (a number of 25 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27), and also a Moran number because the ratio is a prime number: 57039007453 = 1540053201231 / (1 + 5 + 4 + 0 + 0 + 5 + 3 + 2 + 0 + 1 + 2 + 3 + 1).

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1540053201195 and 1540053201204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1540053201233) 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, 28519503700 + ... + 28519503753.

It is an arithmetic number, because the mean of its divisors is an integer number (285195037270).

Almost surely, 2^{1540053201231} is an apocalyptic number.

1540053201231 is a deficient number, since it is larger than the sum of its proper divisors (741507096929).

1540053201231 is an equidigital number, since it uses as much as digits as its factorization.

1540053201231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 57039007462 (or 57039007456 counting only the distinct ones).

The product of its (nonzero) digits is 3600, while the sum is 27.

Adding to 1540053201231 its reverse (1321023500451), we get a palindrome (2861076701682).

The spelling of 1540053201231 in words is "one trillion, five hundred forty billion, fifty-three million, two hundred one thousand, two hundred thirty-one".