631271340346 has 4 divisors (see below), whose sum is σ = 946907010522. Its totient is φ = 315635670172.

The previous prime is 631271340341. The next prime is 631271340347. The reversal of 631271340346 is 643043172136.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 631158747025 + 112593321 = 794455^2 + 10611^2 .

It is a junction number, because it is equal to n+sod(n) for n = 631271340299 and 631271340308.

It is not an unprimeable number, because it can be changed into a prime (631271340341) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 157817835085 + ... + 157817835088.

Almost surely, 2^631271340346 is an apocalyptic number.

631271340346 is a deficient number, since it is larger than the sum of its proper divisors (315635670176).

631271340346 is a wasteful number, since it uses less digits than its factorization.

631271340346 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 315635670175.

The product of its (nonzero) digits is 217728, while the sum is 40.

The spelling of 631271340346 in words is "six hundred thirty-one billion, two hundred seventy-one million, three hundred forty thousand, three hundred forty-six".