20231430155 has 8 divisors (see below), whose sum is σ = 24400954512. Its totient is φ = 16102985248.

The previous prime is 20231430151. The next prime is 20231430173. The reversal of 20231430155 is 55103413202.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 20231430155 - 2² = 20231430151 is a prime.

It is a super-2 number, since 2×20231430155² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20231430151) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10268777 + ... + 10270746.

It is an arithmetic number, because the mean of its divisors is an integer number (3050119314).

Almost surely, 2^20231430155 is an apocalyptic number.

20231430155 is a deficient number, since it is larger than the sum of its proper divisors (4169524357).

20231430155 is a wasteful number, since it uses less digits than its factorization.

20231430155 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20539725.

The product of its (nonzero) digits is 3600, while the sum is 26.

Adding to 20231430155 its reverse (55103413202), we get a palindrome (75334843357).

The spelling of 20231430155 in words is "twenty billion, two hundred thirty-one million, four hundred thirty thousand, one hundred fifty-five".