631215552011 has 8 divisors (see below), whose sum is σ = 692984765424. Its totient is φ = 570177335520.

The previous prime is 631215551951. The next prime is 631215552053. The reversal of 631215552011 is 110255512136.

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

It is a cyclic number.

It is not a de Polignac number, because 631215552011 - 2¹⁴ = 631215535627 is a prime.

It is a super-2 number, since 2×631215552011² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (631215552811) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 182747420 + ... + 182750873.

It is an arithmetic number, because the mean of its divisors is an integer number (86623095678).

Almost surely, 2^631215552011 is an apocalyptic number.

631215552011 is a deficient number, since it is larger than the sum of its proper divisors (61769213413).

631215552011 is a wasteful number, since it uses less digits than its factorization.

631215552011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 365498461.

The product of its (nonzero) digits is 9000, while the sum is 32.

The spelling of 631215552011 in words is "six hundred thirty-one billion, two hundred fifteen million, five hundred fifty-two thousand, eleven".