201023430 has 32 divisors (see below), whose sum is σ = 486148608. Its totient is φ = 53196000.

The previous prime is 201023429. The next prime is 201023441. The reversal of 201023430 is 34320102.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 21646 + ... + 29505.

It is an arithmetic number, because the mean of its divisors is an integer number (15192144).

Almost surely, 2^201023430 is an apocalyptic number.

201023430 is an abundant number, since it is smaller than the sum of its proper divisors (285125178).

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

201023430 is a wasteful number, since it uses less digits than its factorization.

201023430 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51292.

The product of its (nonzero) digits is 144, while the sum is 15.

The square root of 201023430 is about 14178.2731670680. The cubic root of 201023430 is about 585.7993601531.

Adding to 201023430 its reverse (34320102), we get a palindrome (235343532).

It can be divided in two parts, 20102 and 3430, that added together give a palindrome (23532).

The spelling of 201023430 in words is "two hundred one million, twenty-three thousand, four hundred thirty".