70231091 has 8 divisors (see below), whose sum is σ = 80673120. Its totient is φ = 59891328.

The previous prime is 70231061. The next prime is 70231099. The reversal of 70231091 is 19013207.

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

It is not a de Polignac number, because 70231091 - 2¹⁰ = 70230067 is a prime.

It is a super-2 number, since 2×70231091² = 9864812286100562, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (70231099) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 24086 + ... + 26843.

It is an arithmetic number, because the mean of its divisors is an integer number (10084140).

Almost surely, 2^70231091 is an apocalyptic number.

70231091 is a deficient number, since it is larger than the sum of its proper divisors (10442029).

70231091 is a wasteful number, since it uses less digits than its factorization.

70231091 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51133.

The product of its (nonzero) digits is 378, while the sum is 23.

The square root of 70231091 is about 8380.3992148346. The cubic root of 70231091 is about 412.5815517977.

Adding to 70231091 its reverse (19013207), we get a palindrome (89244298).

The spelling of 70231091 in words is "seventy million, two hundred thirty-one thousand, ninety-one".