131477770 has 8 divisors (see below), whose sum is σ = 236660004. Its totient is φ = 52591104.

The previous prime is 131477767. The next prime is 131477771. The reversal of 131477770 is 77774131.

It can be written as a sum of positive squares in 2 ways, for example, as 108638929 + 22838841 = 10423^2 + 4779^2 .

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

It is a super-3 number, since 3×131477770³ (a number of 25 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (131477771) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6573879 + ... + 6573898.

Almost surely, 2^131477770 is an apocalyptic number.

131477770 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

131477770 is a deficient number, since it is larger than the sum of its proper divisors (105182234).

131477770 is a wasteful number, since it uses less digits than its factorization.

131477770 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13147784.

The product of its (nonzero) digits is 28812, while the sum is 37.

The square root of 131477770 is about 11466.3756261514. The cubic root of 131477770 is about 508.4919826108.

The spelling of 131477770 in words is "one hundred thirty-one million, four hundred seventy-seven thousand, seven hundred seventy".