1031211202312 has 8 divisors (see below), whose sum is σ = 1933521004350. Its totient is φ = 515605601152.

The previous prime is 1031211202277. The next prime is 1031211202339. The reversal of 1031211202312 is 2132021121301.

It can be written as a sum of positive squares in only one way, i.e., 576484858756 + 454726343556 = 759266^2 + 674334^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a self number, because there is not a number n which added to its sum of digits gives 1031211202312.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 64450700137 + ... + 64450700152.

Almost surely, 2^{1031211202312} is an apocalyptic number.

It is an amenable number.

1031211202312 is a deficient number, since it is larger than the sum of its proper divisors (902309802038).

1031211202312 is a wasteful number, since it uses less digits than its factorization.

1031211202312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 128901400295 (or 128901400291 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 19.

Adding to 1031211202312 its reverse (2132021121301), we get a palindrome (3163232323613).

The spelling of 1031211202312 in words is "one trillion, thirty-one billion, two hundred eleven million, two hundred two thousand, three hundred twelve".