20123401302 has 48 divisors (see below), whose sum is σ = 43901964288. Its totient is φ = 6661571760.

The previous prime is 20123401289. The next prime is 20123401343. The reversal of 20123401302 is 20310432102.

20123401302 is a `hidden beast` number, since 20 + 1 + 2 + 340 + 1 + 302 = 666.

It is a super-2 number, since 2×20123401302² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2206083 + ... + 2215185.

It is an arithmetic number, because the mean of its divisors is an integer number (914624256).

Almost surely, 2^20123401302 is an apocalyptic number.

20123401302 is an abundant number, since it is smaller than the sum of its proper divisors (23778562986).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20123401302 is a wasteful number, since it uses less digits than its factorization.

20123401302 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9945 (or 9942 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

Adding to 20123401302 its reverse (20310432102), we get a palindrome (40433833404).

The spelling of 20123401302 in words is "twenty billion, one hundred twenty-three million, four hundred one thousand, three hundred two".