23143402 has 8 divisors (see below), whose sum is σ = 34895556. Its totient is φ = 11511552.

The previous prime is 23143397. The next prime is 23143423. The reversal of 23143402 is 20434132.

It can be written as a sum of positive squares in 2 ways, for example, as 21724921 + 1418481 = 4661^2 + 1191^2 .

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

It is a super-2 number, since 2×23143402² = 1071234112267208, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 23143402.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 29593 + ... + 30364.

Almost surely, 2^23143402 is an apocalyptic number.

23143402 is a deficient number, since it is larger than the sum of its proper divisors (11752154).

23143402 is a wasteful number, since it uses less digits than its factorization.

23143402 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 60152.

The product of its (nonzero) digits is 576, while the sum is 19.

The square root of 23143402 is about 4810.7589837779. The cubic root of 23143402 is about 284.9765118634.

Adding to 23143402 its reverse (20434132), we get a palindrome (43577534).

The spelling of 23143402 in words is "twenty-three million, one hundred forty-three thousand, four hundred two".