403212303440 has 20 divisors (see below), whose sum is σ = 937468605684. Its totient is φ = 161284921344.

The previous prime is 403212303337. The next prime is 403212303463. The reversal of 403212303440 is 44303212304.

It can be written as a sum of positive squares in 2 ways, for example, as 316806876736 + 86405426704 = 562856^2 + 293948^2 .

It is a tau number, because it is divible by the number of its divisors (20).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2520076817 + ... + 2520076976.

Almost surely, 2^403212303440 is an apocalyptic number.

403212303440 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

403212303440 is an abundant number, since it is smaller than the sum of its proper divisors (534256302244).

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

403212303440 is a wasteful number, since it uses less digits than its factorization.

403212303440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5040153806 (or 5040153800 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 26.

Adding to 403212303440 its reverse (44303212304), we get a palindrome (447515515744).

The spelling of 403212303440 in words is "four hundred three billion, two hundred twelve million, three hundred three thousand, four hundred forty".