203012310402 has 24 divisors (see below), whose sum is σ = 479847279600. Its totient is φ = 61518881880.

The previous prime is 203012310401. The next prime is 203012310409. The reversal of 203012310402 is 204013210302.

203012310402 is a `hidden beast` number, since 2 + 0 + 30 + 1 + 231 + 0 + 402 = 666.

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

It is not an unprimeable number, because it can be changed into a prime (203012310401) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 512657152 + ... + 512657547.

It is an arithmetic number, because the mean of its divisors is an integer number (19993636650).

Almost surely, 2^203012310402 is an apocalyptic number.

203012310402 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

203012310402 is an abundant number, since it is smaller than the sum of its proper divisors (276834969198).

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

203012310402 is a wasteful number, since it uses less digits than its factorization.

203012310402 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1025314718 (or 1025314715 counting only the distinct ones).

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

Adding to 203012310402 its reverse (204013210302), we get a palindrome (407025520704).

The spelling of 203012310402 in words is "two hundred three billion, twelve million, three hundred ten thousand, four hundred two".