15131201131 has 4 divisors (see below), whose sum is σ = 15270019600. Its totient is φ = 14992382664.

The previous prime is 15131201119. The next prime is 15131201143. The reversal of 15131201131 is 13110213151.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 13110213151 = 7 ⋅1872887593.

It is an interprime number because it is at equal distance from previous prime (15131201119) and next prime (15131201143).

It is a cyclic number.

It is not a de Polignac number, because 15131201131 - 2¹⁹ = 15130676843 is a prime.

It is a super-2 number, since 2×15131201131² (a number of 21 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 = 15131201099 and 15131201108.

It is not an unprimeable number, because it can be changed into a prime (15131201161) 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, 69409071 + ... + 69409288.

It is an arithmetic number, because the mean of its divisors is an integer number (3817504900).

Almost surely, 2^15131201131 is an apocalyptic number.

15131201131 is a deficient number, since it is larger than the sum of its proper divisors (138818469).

15131201131 is a wasteful number, since it uses less digits than its factorization.

15131201131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 138818468.

The product of its (nonzero) digits is 90, while the sum is 19.

Adding to 15131201131 its reverse (13110213151), we get a palindrome (28241414282).

The spelling of 15131201131 in words is "fifteen billion, one hundred thirty-one million, two hundred one thousand, one hundred thirty-one".