11301212031 has 16 divisors (see below), whose sum is σ = 15729240288. Its totient is φ = 7210339200.

The previous prime is 11301212029. The next prime is 11301212047. The reversal of 11301212031 is 13021210311.

It is a happy number.

It is not a de Polignac number, because 11301212031 - 2¹ = 11301212029 is a prime.

It is a super-2 number, since 2×11301212031² (a number of 21 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 11301212031.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11301212011) 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, 827760 + ... + 841301.

It is an arithmetic number, because the mean of its divisors is an integer number (983077518).

Almost surely, 2^11301212031 is an apocalyptic number.

11301212031 is a deficient number, since it is larger than the sum of its proper divisors (4428028257).

11301212031 is a wasteful number, since it uses less digits than its factorization.

11301212031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1669162.

The product of its (nonzero) digits is 36, while the sum is 15.

Adding to 11301212031 its reverse (13021210311), we get a palindrome (24322422342).

The spelling of 11301212031 in words is "eleven billion, three hundred one million, two hundred twelve thousand, thirty-one".