20411431001 has 4 divisors (see below), whose sum is σ = 21981541092. Its totient is φ = 18841320912.

The previous prime is 20411430961. The next prime is 20411431009. The reversal of 20411431001 is 10013411402.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 10013411402 = 2 ⋅5006705701.

It can be written as a sum of positive squares in 2 ways, for example, as 6041175625 + 14370255376 = 77725^2 + 119876^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20411431001 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20411431009) 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, 785055026 + ... + 785055051.

It is an arithmetic number, because the mean of its divisors is an integer number (5495385273).

Almost surely, 2^20411431001 is an apocalyptic number.

It is an amenable number.

20411431001 is a deficient number, since it is larger than the sum of its proper divisors (1570110091).

20411431001 is a wasteful number, since it uses less digits than its factorization.

20411431001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1570110090.

The product of its (nonzero) digits is 96, while the sum is 17.

Adding to 20411431001 its reverse (10013411402), we get a palindrome (30424842403).

The spelling of 20411431001 in words is "twenty billion, four hundred eleven million, four hundred thirty-one thousand, one".