69780131 has 8 divisors (see below), whose sum is σ = 70846464. Its totient is φ = 68721480.

The previous prime is 69780097. The next prime is 69780133. The reversal of 69780131 is 13108796.

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

It is a cyclic number.

It is not a de Polignac number, because 69780131 - 2²² = 65585827 is a prime.

It is a super-2 number, since 2×69780131² = 9738533364754322, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 69780091 and 69780100.

It is not an unprimeable number, because it can be changed into a prime (69780133) 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, 17900 + ... + 21446.

It is an arithmetic number, because the mean of its divisors is an integer number (8855808).

Almost surely, 2^69780131 is an apocalyptic number.

69780131 is a deficient number, since it is larger than the sum of its proper divisors (1066333).

69780131 is a wasteful number, since it uses less digits than its factorization.

69780131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3841.

The product of its (nonzero) digits is 9072, while the sum is 35.

The square root of 69780131 is about 8353.4502452579. The cubic root of 69780131 is about 411.6965808076.

The spelling of 69780131 in words is "sixty-nine million, seven hundred eighty thousand, one hundred thirty-one".