78000131 has 8 divisors (see below), whose sum is σ = 90096624. Its totient is φ = 66737920.

The previous prime is 78000121. The next prime is 78000133. The reversal of 78000131 is 13100087.

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

It is not a de Polignac number, because 78000131 - 2¹⁴ = 77983747 is a prime.

It is a super-2 number, since 2×78000131² = 12168040872034322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (78000133) 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, 208370 + ... + 208743.

It is an arithmetic number, because the mean of its divisors is an integer number (11262078).

Almost surely, 2^78000131 is an apocalyptic number.

78000131 is a deficient number, since it is larger than the sum of its proper divisors (12096493).

78000131 is a wasteful number, since it uses less digits than its factorization.

78000131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 417141.

The product of its (nonzero) digits is 168, while the sum is 20.

The square root of 78000131 is about 8831.7682827393. The cubic root of 78000131 is about 427.2661073655.

The spelling of 78000131 in words is "seventy-eight million, one hundred thirty-one", and thus it is an aban number.