4020133431 has 4 divisors (see below), whose sum is σ = 5360177912. Its totient is φ = 2680088952.

The previous prime is 4020133421. The next prime is 4020133441. The reversal of 4020133431 is 1343310204.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (4020133421) and next prime (4020133441).

It is not a de Polignac number, because 4020133431 - 2⁵ = 4020133399 is a prime.

It is a super-4 number, since 4×4020133431⁴ (a number of 40 digits) contains 4444 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 4020133398 and 4020133407.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4020133421) 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, 670022236 + ... + 670022241.

It is an arithmetic number, because the mean of its divisors is an integer number (1340044478).

Almost surely, 2^4020133431 is an apocalyptic number.

4020133431 is a deficient number, since it is larger than the sum of its proper divisors (1340044481).

4020133431 is a wasteful number, since it uses less digits than its factorization.

4020133431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1340044480.

The product of its (nonzero) digits is 864, while the sum is 21.

The square root of 4020133431 is about 63404.5221652210. The cubic root of 4020133431 is about 1590.0599150714.

Adding to 4020133431 its reverse (1343310204), we get a palindrome (5363443635).

The spelling of 4020133431 in words is "four billion, twenty million, one hundred thirty-three thousand, four hundred thirty-one".