31020443441 has 8 divisors (see below), whose sum is σ = 33414300864. Its totient is φ = 28627681680.

The previous prime is 31020443437. The next prime is 31020443449. The reversal of 31020443441 is 14434402013.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 31020443441 - 2² = 31020443437 is a prime.

It is a super-2 number, since 2×31020443441² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 31020443441.

It is not an unprimeable number, because it can be changed into a prime (31020443449) 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, 214631 + ... + 328796.

It is an arithmetic number, because the mean of its divisors is an integer number (4176787608).

Almost surely, 2^31020443441 is an apocalyptic number.

It is an amenable number.

31020443441 is a deficient number, since it is larger than the sum of its proper divisors (2393857423).

31020443441 is a wasteful number, since it uses less digits than its factorization.

31020443441 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 547831.

The product of its (nonzero) digits is 4608, while the sum is 26.

Adding to 31020443441 its reverse (14434402013), we get a palindrome (45454845454).

The spelling of 31020443441 in words is "thirty-one billion, twenty million, four hundred forty-three thousand, four hundred forty-one".