131261738 has 16 divisors (see below), whose sum is σ = 201142656. Its totient is φ = 64228320.

The previous prime is 131261737. The next prime is 131261771. The reversal of 131261738 is 837162131.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (131261737) 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, 15695 + ... + 22557.

It is an arithmetic number, because the mean of its divisors is an integer number (12571416).

Almost surely, 2^131261738 is an apocalyptic number.

131261738 is a deficient number, since it is larger than the sum of its proper divisors (69880918).

131261738 is a wasteful number, since it uses less digits than its factorization.

131261738 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7069.

The product of its digits is 6048, while the sum is 32.

The square root of 131261738 is about 11456.9515142554. The cubic root of 131261738 is about 508.2133277469.

The spelling of 131261738 in words is "one hundred thirty-one million, two hundred sixty-one thousand, seven hundred thirty-eight".