20011514231 has 2 divisors, whose sum is σ = 20011514232. Its totient is φ = 20011514230.

The previous prime is 20011514197. The next prime is 20011514261. The reversal of 20011514231 is 13241511002.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20011514231 is a prime.

It is a super-2 number, since 2×20011514231² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20011514261) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10005757115 + 10005757116.

It is an arithmetic number, because the mean of its divisors is an integer number (10005757116).

Almost surely, 2^20011514231 is an apocalyptic number.

20011514231 is a deficient number, since it is larger than the sum of its proper divisors (1).

20011514231 is an equidigital number, since it uses as much as digits as its factorization.

20011514231 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 240, while the sum is 20.

The spelling of 20011514231 in words is "twenty billion, eleven million, five hundred fourteen thousand, two hundred thirty-one".