23071156 has 6 divisors (see below), whose sum is σ = 40374530. Its totient is φ = 11535576.

The previous prime is 23071141. The next prime is 23071157. The reversal of 23071156 is 65117032.

It can be written as a sum of positive squares in only one way, i.e., 21771556 + 1299600 = 4666^2 + 1140^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 23071156.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23071157) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2883891 + ... + 2883898.

Almost surely, 2^23071156 is an apocalyptic number.

It is an amenable number.

23071156 is a deficient number, since it is larger than the sum of its proper divisors (17303374).

23071156 is a wasteful number, since it uses less digits than its factorization.

23071156 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5767793 (or 5767791 counting only the distinct ones).

The product of its (nonzero) digits is 1260, while the sum is 25.

The square root of 23071156 is about 4803.2443202486. The cubic root of 23071156 is about 284.6796688193.

Adding to 23071156 its reverse (65117032), we get a palindrome (88188188).

The spelling of 23071156 in words is "twenty-three million, seventy-one thousand, one hundred fifty-six".