131434575406 has 4 divisors (see below), whose sum is σ = 197151863112. Its totient is φ = 65717287702.

The previous prime is 131434575401. The next prime is 131434575469. The reversal of 131434575406 is 604575434131.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a super-2 number, since 2×131434575406² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131434575401) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32858643850 + ... + 32858643853.

It is an arithmetic number, because the mean of its divisors is an integer number (49287965778).

Almost surely, 2^131434575406 is an apocalyptic number.

131434575406 is a deficient number, since it is larger than the sum of its proper divisors (65717287706).

131434575406 is an equidigital number, since it uses as much as digits as its factorization.

131434575406 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 65717287705.

The product of its (nonzero) digits is 604800, while the sum is 43.

The spelling of 131434575406 in words is "one hundred thirty-one billion, four hundred thirty-four million, five hundred seventy-five thousand, four hundred six".