1301212311231 has 32 divisors (see below), whose sum is σ = 2011000974336. Its totient is φ = 732977280000.

The previous prime is 1301212311221. The next prime is 1301212311241. The reversal of 1301212311231 is 1321132121031.

It is an interprime number because it is at equal distance from previous prime (1301212311221) and next prime (1301212311241).

It is not a de Polignac number, because 1301212311231 - 2⁶ = 1301212311167 is a prime.

It is a super-2 number, since 2×1301212311231² (a number of 25 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a junction number, because it is equal to n+sod(n) for n = 1301212311198 and 1301212311207.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1301212311221) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 11635281 + ... + 11746581.

It is an arithmetic number, because the mean of its divisors is an integer number (62843780448).

Almost surely, 2^{1301212311231} is an apocalyptic number.

1301212311231 is a deficient number, since it is larger than the sum of its proper divisors (709788663105).

1301212311231 is a wasteful number, since it uses less digits than its factorization.

1301212311231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 119223.

The product of its (nonzero) digits is 216, while the sum is 21.

Adding to 1301212311231 its reverse (1321132121031), we get a palindrome (2622344432262).

The spelling of 1301212311231 in words is "one trillion, three hundred one billion, two hundred twelve million, three hundred eleven thousand, two hundred thirty-one".