1234780131 has 32 divisors (see below), whose sum is σ = 1825528320. Its totient is φ = 737581824.

The previous prime is 1234780123. The next prime is 1234780133. The reversal of 1234780131 is 1310874321.

It is not a de Polignac number, because 1234780131 - 2³ = 1234780123 is a prime.

It is a super-2 number, since 2×1234780131² = 3049363943824754322, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1234780133) 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, 277855 + ... + 282263.

It is an arithmetic number, because the mean of its divisors is an integer number (57047760).

Almost surely, 2^1234780131 is an apocalyptic number.

1234780131 is a deficient number, since it is larger than the sum of its proper divisors (590748189).

1234780131 is a wasteful number, since it uses less digits than its factorization.

1234780131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4635.

The product of its (nonzero) digits is 4032, while the sum is 30.

The square root of 1234780131 is about 35139.4383990410. The cubic root of 1234780131 is about 1072.8274510487.

The spelling of 1234780131 in words is "one billion, two hundred thirty-four million, seven hundred eighty thousand, one hundred thirty-one".