131711028638 has 32 divisors (see below), whose sum is σ = 237724089600. Its totient is φ = 53465396544.

The previous prime is 131711028599. The next prime is 131711028641. The reversal of 131711028638 is 836820117131.

It is a happy number.

It is a super-2 number, since 2×131711028638² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 131711028595 and 131711028604.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1276898 + ... + 1376186.

It is an arithmetic number, because the mean of its divisors is an integer number (7428877800).

Almost surely, 2^131711028638 is an apocalyptic number.

131711028638 is a deficient number, since it is larger than the sum of its proper divisors (106013060962).

131711028638 is a wasteful number, since it uses less digits than its factorization.

131711028638 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 104304.

The product of its (nonzero) digits is 48384, while the sum is 41.

The spelling of 131711028638 in words is "one hundred thirty-one billion, seven hundred eleven million, twenty-eight thousand, six hundred thirty-eight".