7138061131 has 8 divisors (see below), whose sum is σ = 7407504720. Its totient is φ = 6870171168.

The previous prime is 7138061093. The next prime is 7138061141. The reversal of 7138061131 is 1311608317.

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 7138061131 - 2³¹ = 4990577483 is a prime.

It is a super-2 number, since 2×7138061131² (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 = 7138061093 and 7138061102.

It is not an unprimeable number, because it can be changed into a prime (7138061141) 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, 379041 + ... + 397426.

It is an arithmetic number, because the mean of its divisors is an integer number (925938090).

Almost surely, 2^7138061131 is an apocalyptic number.

7138061131 is a deficient number, since it is larger than the sum of its proper divisors (269443589).

7138061131 is a wasteful number, since it uses less digits than its factorization.

7138061131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 776813.

The product of its (nonzero) digits is 3024, while the sum is 31.

The square root of 7138061131 is about 84487.0471196621. The cubic root of 7138061131 is about 1925.4256555546.

Adding to 7138061131 its reverse (1311608317), we get a palindrome (8449669448).

The spelling of 7138061131 in words is "seven billion, one hundred thirty-eight million, sixty-one thousand, one hundred thirty-one".