31100162043 has 4 divisors (see below), whose sum is σ = 41466882728. Its totient is φ = 20733441360.

The previous prime is 31100162029. The next prime is 31100162059. The reversal of 31100162043 is 34026100113.

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

It is not a de Polignac number, because 31100162043 - 2¹² = 31100157947 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (31100162143) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5183360338 + ... + 5183360343.

It is an arithmetic number, because the mean of its divisors is an integer number (10366720682).

Almost surely, 2^31100162043 is an apocalyptic number.

31100162043 is a deficient number, since it is larger than the sum of its proper divisors (10366720685).

31100162043 is a wasteful number, since it uses less digits than its factorization.

31100162043 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10366720684.

The product of its (nonzero) digits is 432, while the sum is 21.

Adding to 31100162043 its reverse (34026100113), we get a palindrome (65126262156).

The spelling of 31100162043 in words is "thirty-one billion, one hundred million, one hundred sixty-two thousand, forty-three".