631026139233 has 16 divisors (see below), whose sum is σ = 963538119680. Its totient is φ = 359845935696.

The previous prime is 631026139223. The next prime is 631026139253. The reversal of 631026139233 is 332931620136.

It is not a de Polignac number, because 631026139233 - 2⁴ = 631026139217 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 631026139191 and 631026139200.

It is not an unprimeable number, because it can be changed into a prime (631026139223) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 30840763 + ... + 30861216.

It is an arithmetic number, because the mean of its divisors is an integer number (60221132480).

Almost surely, 2^631026139233 is an apocalyptic number.

It is an amenable number.

631026139233 is a deficient number, since it is larger than the sum of its proper divisors (332511980447).

631026139233 is a wasteful number, since it uses less digits than its factorization.

631026139233 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 61702476.

The product of its (nonzero) digits is 104976, while the sum is 39.

Adding to 631026139233 its reverse (332931620136), we get a palindrome (963957759369).

The spelling of 631026139233 in words is "six hundred thirty-one billion, twenty-six million, one hundred thirty-nine thousand, two hundred thirty-three".