70104531 has 16 divisors (see below), whose sum is σ = 108843264. Its totient is φ = 39303264.

The previous prime is 70104527. The next prime is 70104533. The reversal of 70104531 is 13540107.

It is not a de Polignac number, because 70104531 - 2² = 70104527 is a prime.

It is a super-2 number, since 2×70104531² = 9829290533459922, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a junction number, because it is equal to n+sod(n) for n = 70104498 and 70104507.

It is not an unprimeable number, because it can be changed into a prime (70104533) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 30381 + ... + 32606.

It is an arithmetic number, because the mean of its divisors is an integer number (6802704).

Almost surely, 2^70104531 is an apocalyptic number.

70104531 is a deficient number, since it is larger than the sum of its proper divisors (38738733).

70104531 is a wasteful number, since it uses less digits than its factorization.

70104531 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 63050.

The product of its (nonzero) digits is 420, while the sum is 21.

The square root of 70104531 is about 8372.8448570363. The cubic root of 70104531 is about 412.3335717963. Note that the first 3 decimals are identical.

Adding to 70104531 its reverse (13540107), we get a palindrome (83644638).

The spelling of 70104531 in words is "seventy million, one hundred four thousand, five hundred thirty-one".