31130136003 has 4 divisors (see below), whose sum is σ = 41506848008. Its totient is φ = 20753424000.

The previous prime is 31130135983. The next prime is 31130136019. The reversal of 31130136003 is 30063103113.

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

It is not a de Polignac number, because 31130136003 - 2²⁰ = 31129087427 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (31130176003) 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, 5188355998 + ... + 5188356003.

It is an arithmetic number, because the mean of its divisors is an integer number (10376712002).

Almost surely, 2^31130136003 is an apocalyptic number.

31130136003 is a deficient number, since it is larger than the sum of its proper divisors (10376712005).

31130136003 is a wasteful number, since it uses less digits than its factorization.

31130136003 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10376712004.

The product of its (nonzero) digits is 486, while the sum is 21.

Adding to 31130136003 its reverse (30063103113), we get a palindrome (61193239116).

The spelling of 31130136003 in words is "thirty-one billion, one hundred thirty million, one hundred thirty-six thousand, three".