31403040453012 has 12 divisors (see below), whose sum is σ = 73273761057056. Its totient is φ = 10467680151000.

The previous prime is 31403040452963. The next prime is 31403040453017. The reversal of 31403040453012 is 21035404030413.

It is a tau number, because it is divible by the number of its divisors (12).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31403040453017) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1308460018864 + ... + 1308460018887.

Almost surely, 2^{31403040453012} is an apocalyptic number.

It is an amenable number.

31403040453012 is an abundant number, since it is smaller than the sum of its proper divisors (41870720604044).

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

31403040453012 is a wasteful number, since it uses less digits than its factorization.

31403040453012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2616920037758 (or 2616920037756 counting only the distinct ones).

The product of its (nonzero) digits is 17280, while the sum is 30.

Adding to 31403040453012 its reverse (21035404030413), we get a palindrome (52438444483425).

The spelling of 31403040453012 in words is "thirty-one trillion, four hundred three billion, forty million, four hundred fifty-three thousand, twelve".