31204148439 has 4 divisors (see below), whose sum is σ = 41605531256. Its totient is φ = 20802765624.

The previous prime is 31204148429. The next prime is 31204148471. The reversal of 31204148439 is 93484140213.

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

It is not a de Polignac number, because 31204148439 - 2⁵ = 31204148407 is a prime.

It is a super-3 number, since 3×31204148439³ (a number of 32 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 31204148397 and 31204148406.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31204148429) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5200691404 + ... + 5200691409.

It is an arithmetic number, because the mean of its divisors is an integer number (10401382814).

Almost surely, 2^31204148439 is an apocalyptic number.

31204148439 is a deficient number, since it is larger than the sum of its proper divisors (10401382817).

31204148439 is a wasteful number, since it uses less digits than its factorization.

31204148439 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10401382816.

The product of its (nonzero) digits is 82944, while the sum is 39.

The spelling of 31204148439 in words is "thirty-one billion, two hundred four million, one hundred forty-eight thousand, four hundred thirty-nine".