20148132731 has 2 divisors, whose sum is σ = 20148132732. Its totient is φ = 20148132730.

The previous prime is 20148132689. The next prime is 20148132749. The reversal of 20148132731 is 13723184102.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20148132731 is a prime.

It is a super-2 number, since 2×20148132731² (a number of 21 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (20148132751) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10074066365 + 10074066366.

It is an arithmetic number, because the mean of its divisors is an integer number (10074066366).

Almost surely, 2^20148132731 is an apocalyptic number.

20148132731 is a deficient number, since it is larger than the sum of its proper divisors (1).

20148132731 is an equidigital number, since it uses as much as digits as its factorization.

20148132731 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 8064, while the sum is 32.

The spelling of 20148132731 in words is "twenty billion, one hundred forty-eight million, one hundred thirty-two thousand, seven hundred thirty-one".