1231210031330 has 32 divisors (see below), whose sum is σ = 2369774588400. Its totient is φ = 458925107200.

The previous prime is 1231210031287. The next prime is 1231210031333. The reversal of 1231210031330 is 331300121321.

It can be written as a sum of positive squares in 8 ways, for example, as 1230530959849 + 679071481 = 1109293^2 + 26059^2 .

It is a super-3 number, since 3×1231210031330³ (a number of 37 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (1231210031333) 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, 35836355 + ... + 35870694.

Almost surely, 2^{1231210031330} is an apocalyptic number.

1231210031330 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1231210031330 is a deficient number, since it is larger than the sum of its proper divisors (1138564557070).

1231210031330 is a wasteful number, since it uses less digits than its factorization.

1231210031330 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 71707174.

The product of its (nonzero) digits is 324, while the sum is 20.

Adding to 1231210031330 its reverse (331300121321), we get a palindrome (1562510152651).

The spelling of 1231210031330 in words is "one trillion, two hundred thirty-one billion, two hundred ten million, thirty-one thousand, three hundred thirty".