20161370250131 has 8 divisors (see below), whose sum is σ = 21998965347504. Its totient is φ = 18324565695520.

The previous prime is 20161370250127. The next prime is 20161370250139. The reversal of 20161370250131 is 13105207316102.

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 20161370250131 - 2² = 20161370250127 is a prime.

It is a super-2 number, since 2×20161370250131² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20161370250139) 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, 197582360 + ... + 197684373.

It is an arithmetic number, because the mean of its divisors is an integer number (2749870668438).

Almost surely, 2^{20161370250131} is an apocalyptic number.

20161370250131 is a deficient number, since it is larger than the sum of its proper divisors (1837595097373).

20161370250131 is a wasteful number, since it uses less digits than its factorization.

20161370250131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 395271381.

The product of its (nonzero) digits is 7560, while the sum is 32.

Adding to 20161370250131 its reverse (13105207316102), we get a palindrome (33266577566233).

The spelling of 20161370250131 in words is "twenty trillion, one hundred sixty-one billion, three hundred seventy million, two hundred fifty thousand, one hundred thirty-one".