131063778 has 32 divisors (see below), whose sum is σ = 308387520. Its totient is φ = 41117760.

The previous prime is 131063747. The next prime is 131063783. The reversal of 131063778 is 877360131.

131063778 is a `hidden beast` number, since 1 + 3 + 10 + 637 + 7 + 8 = 666.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 70468 + ... + 72303.

It is an arithmetic number, because the mean of its divisors is an integer number (9637110).

Almost surely, 2^131063778 is an apocalyptic number.

131063778 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

131063778 is an abundant number, since it is smaller than the sum of its proper divisors (177323742).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

131063778 is a wasteful number, since it uses less digits than its factorization.

131063778 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 142799 (or 142793 counting only the distinct ones).

The product of its (nonzero) digits is 21168, while the sum is 36.

The square root of 131063778 is about 11448.3089580951. The cubic root of 131063778 is about 507.9577149791.

It can be divided in two parts, 131063 and 778, that added together give a triangular number (131841 = T₅₁₃).

The spelling of 131063778 in words is "one hundred thirty-one million, sixty-three thousand, seven hundred seventy-eight".