2131401521 has 8 divisors (see below), whose sum is σ = 2165324544. Its totient is φ = 2097540720.

The previous prime is 2131401479. The next prime is 2131401533. The reversal of 2131401521 is 1251041312.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2131401521 is a prime.

It is a super-2 number, since 2×2131401521² = 9085744887442226882, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2131401493 and 2131401502.

It is not an unprimeable number, because it can be changed into a prime (2131401541) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 56096 + ... + 86078.

It is an arithmetic number, because the mean of its divisors is an integer number (270665568).

Almost surely, 2^2131401521 is an apocalyptic number.

It is an amenable number.

2131401521 is a deficient number, since it is larger than the sum of its proper divisors (33923023).

2131401521 is a wasteful number, since it uses less digits than its factorization.

2131401521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31111.

The product of its (nonzero) digits is 240, while the sum is 20.

The square root of 2131401521 is about 46167.1043168185. The cubic root of 2131401521 is about 1286.9304903971.

Adding to 2131401521 its reverse (1251041312), we get a palindrome (3382442833).

The spelling of 2131401521 in words is "two billion, one hundred thirty-one million, four hundred one thousand, five hundred twenty-one".