42101231131 has 4 divisors (see below), whose sum is σ = 42101644392. Its totient is φ = 42100817872.

The previous prime is 42101231129. The next prime is 42101231191. The reversal of 42101231131 is 13113210124.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 42101231131 - 2¹ = 42101231129 is a prime.

It is a super-2 number, since 2×42101231131² (a number of 22 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 = 42101231099 and 42101231108.

It is not an unprimeable number, because it can be changed into a prime (42101231191) 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, 66735 + ... + 297751.

It is an arithmetic number, because the mean of its divisors is an integer number (10525411098).

Almost surely, 2^42101231131 is an apocalyptic number.

42101231131 is a deficient number, since it is larger than the sum of its proper divisors (413261).

42101231131 is a wasteful number, since it uses less digits than its factorization.

42101231131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 413260.

The product of its (nonzero) digits is 144, while the sum is 19.

Adding to 42101231131 its reverse (13113210124), we get a palindrome (55214441255).

The spelling of 42101231131 in words is "forty-two billion, one hundred one million, two hundred thirty-one thousand, one hundred thirty-one".