31142400033 has 4 divisors (see below), whose sum is σ = 41523200048. Its totient is φ = 20761600020.

The previous prime is 31142400007. The next prime is 31142400041. The reversal of 31142400033 is 33000424113.

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 not a de Polignac number, because 31142400033 - 2¹² = 31142395937 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 31142399982 and 31142400009.

It is not an unprimeable number, because it can be changed into a prime (31142400733) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5190400003 + ... + 5190400008.

It is an arithmetic number, because the mean of its divisors is an integer number (10380800012).

Almost surely, 2^31142400033 is an apocalyptic number.

It is an amenable number.

31142400033 is a deficient number, since it is larger than the sum of its proper divisors (10380800015).

31142400033 is a wasteful number, since it uses less digits than its factorization.

31142400033 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10380800014.

The product of its (nonzero) digits is 864, while the sum is 21.

Adding to 31142400033 its reverse (33000424113), we get a palindrome (64142824146).

The spelling of 31142400033 in words is "thirty-one billion, one hundred forty-two million, four hundred thousand, thirty-three".