70061131 has 24 divisors (see below), whose sum is σ = 87021216. Its totient is φ = 56044800.

The previous prime is 70061119. The next prime is 70061153. The reversal of 70061131 is 13116007.

It is a happy number.

It is a de Polignac number, because none of the positive numbers 2^k-70061131 is a prime.

It is a super-2 number, since 2×70061131² = 9817124153998322, 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 = 70061099 and 70061108.

It is not an unprimeable number, because it can be changed into a prime (70061231) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 125505 + ... + 126061.

It is an arithmetic number, because the mean of its divisors is an integer number (3625884).

Almost surely, 2^70061131 is an apocalyptic number.

70061131 is a deficient number, since it is larger than the sum of its proper divisors (16960085).

70061131 is a wasteful number, since it uses less digits than its factorization.

70061131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 739 (or 732 counting only the distinct ones).

The product of its (nonzero) digits is 126, while the sum is 19.

The square root of 70061131 is about 8370.2527440932. The cubic root of 70061131 is about 412.2484656894.

Adding to 70061131 its reverse (13116007), we get a palindrome (83177138).

The spelling of 70061131 in words is "seventy million, sixty-one thousand, one hundred thirty-one".