131778002 has 16 divisors (see below), whose sum is σ = 200271552. Its totient is φ = 65026800.

The previous prime is 131777969. The next prime is 131778013. The reversal of 131778002 is 200877131.

It is a super-2 number, since 2×131778002² = 34730883622224008, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 47888 + ... + 50564.

It is an arithmetic number, because the mean of its divisors is an integer number (12516972).

Almost surely, 2^131778002 is an apocalyptic number.

131778002 is a deficient number, since it is larger than the sum of its proper divisors (68493550).

131778002 is a wasteful number, since it uses less digits than its factorization.

131778002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2993.

The product of its (nonzero) digits is 2352, while the sum is 29.

The square root of 131778002 is about 11479.4600047215. The cubic root of 131778002 is about 508.8787387578.

The spelling of 131778002 in words is "one hundred thirty-one million, seven hundred seventy-eight thousand, two".