23070987 has 20 divisors (see below), whose sum is σ = 35309736. Its totient is φ = 15003360.

The previous prime is 23070977. The next prime is 23070991. The reversal of 23070987 is 78907032.

It is not a de Polignac number, because 23070987 - 2¹⁸ = 22808843 is a prime.

It is an alternating number because its digits alternate between even and odd.

It is not an unprimeable number, because it can be changed into a prime (23070907) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 153 + ... + 6794.

Almost surely, 2^23070987 is an apocalyptic number.

23070987 is a gapful number since it is divisible by the number (27) formed by its first and last digit.

23070987 is a deficient number, since it is larger than the sum of its proper divisors (12238749).

23070987 is an equidigital number, since it uses as much as digits as its factorization.

23070987 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7000 (or 6991 counting only the distinct ones).

The product of its (nonzero) digits is 21168, while the sum is 36.

The square root of 23070987 is about 4803.2267279403. The cubic root of 23070987 is about 284.6789737092.

It can be divided in two parts, 230 and 70987, that added together give a palindrome (71217).

The spelling of 23070987 in words is "twenty-three million, seventy thousand, nine hundred eighty-seven".