203022423401 has 16 divisors (see below), whose sum is σ = 247744257024. Its totient is φ = 162582157584.

The previous prime is 203022423397. The next prime is 203022423419. The reversal of 203022423401 is 104324220302.

It is not a de Polignac number, because 203022423401 - 2² = 203022423397 is a prime.

It is a super-2 number, since 2×203022423401² (a number of 23 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (23).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (203022423431) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 14655971 + ... + 14669816.

It is an arithmetic number, because the mean of its divisors is an integer number (15484016064).

Almost surely, 2^203022423401 is an apocalyptic number.

It is an amenable number.

203022423401 is a deficient number, since it is larger than the sum of its proper divisors (44721833623).

203022423401 is a wasteful number, since it uses less digits than its factorization.

203022423401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29325860.

The product of its (nonzero) digits is 2304, while the sum is 23.

Adding to 203022423401 its reverse (104324220302), we get a palindrome (307346643703).

The spelling of 203022423401 in words is "two hundred three billion, twenty-two million, four hundred twenty-three thousand, four hundred one".