31133213002 has 16 divisors (see below), whose sum is σ = 49166386560. Its totient is φ = 14744706912.

The previous prime is 31133212969. The next prime is 31133213053. The reversal of 31133213002 is 20031233113.

It is a Harshad number since it is a multiple of its sum of digits (19).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 154918 + ... + 293710.

It is an arithmetic number, because the mean of its divisors is an integer number (3072899160).

Almost surely, 2^31133213002 is an apocalyptic number.

31133213002 is a deficient number, since it is larger than the sum of its proper divisors (18033173558).

31133213002 is a wasteful number, since it uses less digits than its factorization.

31133213002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 144717.

The product of its (nonzero) digits is 324, while the sum is 19.

Adding to 31133213002 its reverse (20031233113), we get a palindrome (51164446115).

The spelling of 31133213002 in words is "thirty-one billion, one hundred thirty-three million, two hundred thirteen thousand, two".