20103540031 has 2 divisors, whose sum is σ = 20103540032. Its totient is φ = 20103540030.

The previous prime is 20103540019. The next prime is 20103540059. The reversal of 20103540031 is 13004530102.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 20103540031 - 2⁵ = 20103539999 is a prime.

It is a super-2 number, since 2×20103540031² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 20103539990 and 20103540008.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20103540001) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10051770015 + 10051770016.

It is an arithmetic number, because the mean of its divisors is an integer number (10051770016).

Almost surely, 2^20103540031 is an apocalyptic number.

20103540031 is a deficient number, since it is larger than the sum of its proper divisors (1).

20103540031 is an equidigital number, since it uses as much as digits as its factorization.

20103540031 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 360, while the sum is 19.

The spelling of 20103540031 in words is "twenty billion, one hundred three million, five hundred forty thousand, thirty-one".