31204420314031 has 4 divisors (see below), whose sum is σ = 32561134240752. Its totient is φ = 29847706387312.

The previous prime is 31204420314029. The next prime is 31204420314083. The reversal of 31204420314031 is 13041302440213.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 31204420314031 - 2¹ = 31204420314029 is a prime.

It is a super-2 number, since 2×31204420314031² (a number of 28 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31204420414031) 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 3 ways as a sum of consecutive naturals, for example, 678356963326 + ... + 678356963371.

It is an arithmetic number, because the mean of its divisors is an integer number (8140283560188).

Almost surely, 2^{31204420314031} is an apocalyptic number.

31204420314031 is a deficient number, since it is larger than the sum of its proper divisors (1356713926721).

31204420314031 is a wasteful number, since it uses less digits than its factorization.

31204420314031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1356713926720.

The product of its (nonzero) digits is 6912, while the sum is 28.

Adding to 31204420314031 its reverse (13041302440213), we get a palindrome (44245722754244).

The spelling of 31204420314031 in words is "thirty-one trillion, two hundred four billion, four hundred twenty million, three hundred fourteen thousand, thirty-one".