31402134204240 has 40 divisors (see below), whose sum is σ = 97346616033888. Its totient is φ = 8373902454400.

The previous prime is 31402134204223. The next prime is 31402134204241. The reversal of 31402134204240 is 4240243120413.

It is a tau number, because it is divible by the number of its divisors (40).

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a junction number, because it is equal to n+sod(n) for n = 31402134204198 and 31402134204207.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31402134204241) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 65421112686 + ... + 65421113165.

Almost surely, 2^{31402134204240} is an apocalyptic number.

31402134204240 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

31402134204240 is an abundant number, since it is smaller than the sum of its proper divisors (65944481829648).

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

31402134204240 is a wasteful number, since it uses less digits than its factorization.

31402134204240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 130842225867 (or 130842225861 counting only the distinct ones).

The product of its (nonzero) digits is 18432, while the sum is 30.

Adding to 31402134204240 its reverse (4240243120413), we get a palindrome (35642377324653).

The spelling of 31402134204240 in words is "thirty-one trillion, four hundred two billion, one hundred thirty-four million, two hundred four thousand, two hundred forty".