70305131 has 8 divisors (see below), whose sum is σ = 75797904. Its totient is φ = 64824480.

The previous prime is 70305107. The next prime is 70305133. The reversal of 70305131 is 13150307.

It is a happy number.

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 70305131 - 2²² = 66110827 is a prime.

It is a super-2 number, since 2×70305131² = 9885622889854322, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (70305133) 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, 11705 + ... + 16661.

It is an arithmetic number, because the mean of its divisors is an integer number (9474738).

Almost surely, 2^70305131 is an apocalyptic number.

70305131 is a deficient number, since it is larger than the sum of its proper divisors (5492773).

70305131 is a wasteful number, since it uses less digits than its factorization.

70305131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6061.

The product of its (nonzero) digits is 315, while the sum is 20.

The square root of 70305131 is about 8384.8155018462. The cubic root of 70305131 is about 412.7264867033.

Adding to 70305131 its reverse (13150307), we get a palindrome (83455438).

The spelling of 70305131 in words is "seventy million, three hundred five thousand, one hundred thirty-one".