20215431430 has 8 divisors (see below), whose sum is σ = 36387776592. Its totient is φ = 8086172568.

The previous prime is 20215431427. The next prime is 20215431433. The reversal of 20215431430 is 3413451202.

It is an interprime number because it is at equal distance from previous prime (20215431427) and next prime (20215431433).

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

It is a junction number, because it is equal to n+sod(n) for n = 20215431395 and 20215431404.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20215431433) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1010771562 + ... + 1010771581.

It is an arithmetic number, because the mean of its divisors is an integer number (4548472074).

Almost surely, 2^20215431430 is an apocalyptic number.

20215431430 is a deficient number, since it is larger than the sum of its proper divisors (16172345162).

20215431430 is a wasteful number, since it uses less digits than its factorization.

20215431430 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2021543150.

The product of its (nonzero) digits is 2880, while the sum is 25.

Adding to 20215431430 its reverse (3413451202), we get a palindrome (23628882632).

The spelling of 20215431430 in words is "twenty billion, two hundred fifteen million, four hundred thirty-one thousand, four hundred thirty".