20903673331 has 32 divisors (see below), whose sum is σ = 23075684352. Its totient is φ = 18856535040.

The previous prime is 20903673313. The next prime is 20903673353. The reversal of 20903673331 is 13337630902.

It is a cyclic number.

It is not a de Polignac number, because 20903673331 - 2⁵ = 20903673299 is a prime.

It is a super-2 number, since 2×20903673331² (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 (20903673311) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 9470430 + ... + 9472636.

It is an arithmetic number, because the mean of its divisors is an integer number (721115136).

Almost surely, 2^20903673331 is an apocalyptic number.

20903673331 is a deficient number, since it is larger than the sum of its proper divisors (2172011021).

20903673331 is a wasteful number, since it uses less digits than its factorization.

20903673331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2499.

The product of its (nonzero) digits is 61236, while the sum is 37.

The spelling of 20903673331 in words is "twenty billion, nine hundred three million, six hundred seventy-three thousand, three hundred thirty-one".