31130023133 has 4 divisors (see below), whose sum is σ = 33960025248. Its totient is φ = 28300021020.

The previous prime is 31130023121. The next prime is 31130023153. The reversal of 31130023133 is 33132003113.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 31130023133 - 2⁶ = 31130023069 is a prime.

It is a super-2 number, since 2×31130023133² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31130023103) 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, 1415001041 + ... + 1415001062.

It is an arithmetic number, because the mean of its divisors is an integer number (8490006312).

Almost surely, 2^31130023133 is an apocalyptic number.

It is an amenable number.

31130023133 is a deficient number, since it is larger than the sum of its proper divisors (2830002115).

31130023133 is a wasteful number, since it uses less digits than its factorization.

31130023133 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2830002114.

The product of its (nonzero) digits is 486, while the sum is 20.

Adding to 31130023133 its reverse (33132003113), we get a palindrome (64262026246).

It can be divided in two parts, 311300 and 23133, that added together give a palindrome (334433).

The spelling of 31130023133 in words is "thirty-one billion, one hundred thirty million, twenty-three thousand, one hundred thirty-three".