403453512340 has 24 divisors (see below), whose sum is σ = 847937353032. Its totient is φ = 161250933120.

The previous prime is 403453512337. The next prime is 403453512347. The reversal of 403453512340 is 43215354304.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 3217612176 + 400235900164 = 56724^2 + 632642^2 .

It is a junction number, because it is equal to n+sod(n) for n = 403453512296 and 403453512305.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (403453512347) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8129131 + ... + 8178610.

It is an arithmetic number, because the mean of its divisors is an integer number (35330723043).

Almost surely, 2^403453512340 is an apocalyptic number.

It is an amenable number.

403453512340 is an abundant number, since it is smaller than the sum of its proper divisors (444483840692).

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

403453512340 is a wasteful number, since it uses less digits than its factorization.

403453512340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16308987 (or 16308985 counting only the distinct ones).

The product of its (nonzero) digits is 86400, while the sum is 34.

Adding to 403453512340 its reverse (43215354304), we get a palindrome (446668866644).

The spelling of 403453512340 in words is "four hundred three billion, four hundred fifty-three million, five hundred twelve thousand, three hundred forty".