31020243443 has 8 divisors (see below), whose sum is σ = 36674179680. Its totient is φ = 25671925440.

The previous prime is 31020243439. The next prime is 31020243481. The reversal of 31020243443 is 34434202013.

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

It is not a de Polignac number, because 31020243443 - 2² = 31020243439 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (31020243433) 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, 76404338 + ... + 76404743.

It is an arithmetic number, because the mean of its divisors is an integer number (4584272460).

Almost surely, 2^31020243443 is an apocalyptic number.

31020243443 is a deficient number, since it is larger than the sum of its proper divisors (5653936237).

31020243443 is a wasteful number, since it uses less digits than its factorization.

31020243443 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 152809117.

The product of its (nonzero) digits is 6912, while the sum is 26.

Adding to 31020243443 its reverse (34434202013), we get a palindrome (65454445456).

The spelling of 31020243443 in words is "thirty-one billion, twenty million, two hundred forty-three thousand, four hundred forty-three".