131261435 has 8 divisors (see below), whose sum is σ = 157692096. Its totient is φ = 104890240.

The previous prime is 131261411. The next prime is 131261461. The reversal of 131261435 is 534162131.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 131261435 - 2¹⁶ = 131195899 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9854 + ... + 18963.

It is an arithmetic number, because the mean of its divisors is an integer number (19711512).

Almost surely, 2^131261435 is an apocalyptic number.

131261435 is a deficient number, since it is larger than the sum of its proper divisors (26430661).

131261435 is an equidigital number, since it uses as much as digits as its factorization.

131261435 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29733.

The product of its digits is 2160, while the sum is 26.

The square root of 131261435 is about 11456.9382908349. The cubic root of 131261435 is about 508.2129366993.

The spelling of 131261435 in words is "one hundred thirty-one million, two hundred sixty-one thousand, four hundred thirty-five".