1231014140 has 12 divisors (see below), whose sum is σ = 2585129736. Its totient is φ = 492405648.

The previous prime is 1231014137. The next prime is 1231014143. The reversal of 1231014140 is 414101321.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (1231014137) and next prime (1231014143).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1231014143) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 30775334 + ... + 30775373.

It is an arithmetic number, because the mean of its divisors is an integer number (215427478).

Almost surely, 2^1231014140 is an apocalyptic number.

1231014140 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1231014140 is an abundant number, since it is smaller than the sum of its proper divisors (1354115596).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1231014140 is a wasteful number, since it uses less digits than its factorization.

1231014140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 61550716 (or 61550714 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 17.

The square root of 1231014140 is about 35085.8110922350. The cubic root of 1231014140 is about 1071.7356580249.

Adding to 1231014140 its reverse (414101321), we get a palindrome (1645115461).

The spelling of 1231014140 in words is "one billion, two hundred thirty-one million, fourteen thousand, one hundred forty".