70131380 has 48 divisors (see below), whose sum is σ = 161602560. Its totient is φ = 25353600.

The previous prime is 70131371. The next prime is 70131419. The reversal of 70131380 is 8313107.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 41186 + ... + 42854.

It is an arithmetic number, because the mean of its divisors is an integer number (3366720).

Almost surely, 2^70131380 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 70131380, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (80801280).

70131380 is an abundant number, since it is smaller than the sum of its proper divisors (91471180).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

70131380 is a wasteful number, since it uses less digits than its factorization.

70131380 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1880 (or 1878 counting only the distinct ones).

The product of its (nonzero) digits is 504, while the sum is 23.

The square root of 70131380 is about 8374.4480415129. The cubic root of 70131380 is about 412.3862043005.

Adding to 70131380 its reverse (8313107), we get a palindrome (78444487).

The spelling of 70131380 in words is "seventy million, one hundred thirty-one thousand, three hundred eighty".