131398547 has 24 divisors (see below), whose sum is σ = 162450000. Its totient is φ = 105670656.

The previous prime is 131398543. The next prime is 131398571. The reversal of 131398547 is 745893131.

It is not a de Polignac number, because 131398547 - 2² = 131398543 is a prime.

It is a super-2 number, since 2×131398547² = 34531156307422418, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (131398541) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 104579 + ... + 105827.

It is an arithmetic number, because the mean of its divisors is an integer number (6768750).

Almost surely, 2^131398547 is an apocalyptic number.

131398547 is a deficient number, since it is larger than the sum of its proper divisors (31051453).

131398547 is a wasteful number, since it uses less digits than its factorization.

131398547 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1395 (or 1388 counting only the distinct ones).

The product of its digits is 90720, while the sum is 41.

The square root of 131398547 is about 11462.9205266372. The cubic root of 131398547 is about 508.3898300968.

The spelling of 131398547 in words is "one hundred thirty-one million, three hundred ninety-eight thousand, five hundred forty-seven".