31134132021 has 8 divisors (see below), whose sum is σ = 41572254304. Its totient is φ = 20726048880.

The previous prime is 31134131929. The next prime is 31134132031. The reversal of 31134132021 is 12023143113.

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

It is not a de Polignac number, because 31134132021 - 2⁷ = 31134131893 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31134132031) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7507366 + ... + 7511511.

It is an arithmetic number, because the mean of its divisors is an integer number (5196531788).

Almost surely, 2^31134132021 is an apocalyptic number.

It is an amenable number.

31134132021 is a deficient number, since it is larger than the sum of its proper divisors (10438122283).

31134132021 is a wasteful number, since it uses less digits than its factorization.

31134132021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15019571.

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

Adding to 31134132021 its reverse (12023143113), we get a palindrome (43157275134).

The spelling of 31134132021 in words is "thirty-one billion, one hundred thirty-four million, one hundred thirty-two thousand, twenty-one".