20123101532 has 6 divisors (see below), whose sum is σ = 35215427688. Its totient is φ = 10061550764.

The previous prime is 20123101507. The next prime is 20123101543. The reversal of 20123101532 is 23510132102.

It is a congruent number.

It is an unprimeable number.

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, 2515387688 + ... + 2515387695.

It is an arithmetic number, because the mean of its divisors is an integer number (5869237948).

Almost surely, 2^20123101532 is an apocalyptic number.

It is an amenable number.

20123101532 is a deficient number, since it is larger than the sum of its proper divisors (15092326156).

20123101532 is a wasteful number, since it uses less digits than its factorization.

20123101532 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5030775387 (or 5030775385 counting only the distinct ones).

The product of its (nonzero) digits is 360, while the sum is 20.

Adding to 20123101532 its reverse (23510132102), we get a palindrome (43633233634).

The spelling of 20123101532 in words is "twenty billion, one hundred twenty-three million, one hundred one thousand, five hundred thirty-two".