1213540231132 has 6 divisors (see below), whose sum is σ = 2123695404488. Its totient is φ = 606770115564.

The previous prime is 1213540231117. The next prime is 1213540231147. The reversal of 1213540231132 is 2311320453121.

It is an interprime number because it is at equal distance from previous prime (1213540231117) and next prime (1213540231147).

It is a self number, because there is not a number n which added to its sum of digits gives 1213540231132.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 151692528888 + ... + 151692528895.

Almost surely, 2^{1213540231132} is an apocalyptic number.

It is an amenable number.

1213540231132 is a deficient number, since it is larger than the sum of its proper divisors (910155173356).

1213540231132 is a wasteful number, since it uses less digits than its factorization.

1213540231132 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 303385057787 (or 303385057785 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 28.

Adding to 1213540231132 its reverse (2311320453121), we get a palindrome (3524860684253).

The spelling of 1213540231132 in words is "one trillion, two hundred thirteen billion, five hundred forty million, two hundred thirty-one thousand, one hundred thirty-two".