1520141055731 has 4 divisors (see below), whose sum is σ = 1520299199232. Its totient is φ = 1519982912232.

The previous prime is 1520141055707. The next prime is 1520141055743. The reversal of 1520141055731 is 1375501410251.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1520141055731 - 2³⁴ = 1502961186547 is a prime.

It is a super-2 number, since 2×1520141055731² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1520141055691 and 1520141055700.

It is not an unprimeable number, because it can be changed into a prime (1520146055731) 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, 79057331 + ... + 79076556.

It is an arithmetic number, because the mean of its divisors is an integer number (380074799808).

Almost surely, 2^{1520141055731} is an apocalyptic number.

1520141055731 is a deficient number, since it is larger than the sum of its proper divisors (158143501).

1520141055731 is an equidigital number, since it uses as much as digits as its factorization.

1520141055731 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 158143500.

The product of its (nonzero) digits is 21000, while the sum is 35.

Adding to 1520141055731 its reverse (1375501410251), we get a palindrome (2895642465982).

The spelling of 1520141055731 in words is "one trillion, five hundred twenty billion, one hundred forty-one million, fifty-five thousand, seven hundred thirty-one".