70788131 has 4 divisors (see below), whose sum is σ = 70811664. Its totient is φ = 70764600.

The previous prime is 70788103. The next prime is 70788143. The reversal of 70788131 is 13188707.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 70788131 - 2¹⁴ = 70771747 is a prime.

It is a super-2 number, since 2×70788131² = 10021918980946322, 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 = 70788091 and 70788100.

It is not an unprimeable number, because it can be changed into a prime (70788031) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6455 + ... + 13536.

It is an arithmetic number, because the mean of its divisors is an integer number (17702916).

Almost surely, 2^70788131 is an apocalyptic number.

70788131 is a deficient number, since it is larger than the sum of its proper divisors (23533).

70788131 is a wasteful number, since it uses less digits than its factorization.

70788131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23532.

The product of its (nonzero) digits is 9408, while the sum is 35.

The square root of 70788131 is about 8413.5682679824. The cubic root of 70788131 is about 413.6694815067.

The spelling of 70788131 in words is "seventy million, seven hundred eighty-eight thousand, one hundred thirty-one".