77140311 has 16 divisors (see below), whose sum is σ = 105731808. Its totient is φ = 49996800.

The previous prime is 77140309. The next prime is 77140331. The reversal of 77140311 is 11304177.

It is not a de Polignac number, because 77140311 - 2¹ = 77140309 is a prime.

It is a super-4 number, since 4×77140311⁴ (a number of 33 digits) contains 4444 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (77140331) 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, 40521 + ... + 42381.

It is an arithmetic number, because the mean of its divisors is an integer number (6608238).

Almost surely, 2^77140311 is an apocalyptic number.

77140311 is a deficient number, since it is larger than the sum of its proper divisors (28591497).

77140311 is a wasteful number, since it uses less digits than its factorization.

77140311 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2242.

The product of its (nonzero) digits is 588, while the sum is 24.

The square root of 77140311 is about 8782.9557097824. The cubic root of 77140311 is about 425.6903401060.

Adding to 77140311 its reverse (11304177), we get a palindrome (88444488).

The spelling of 77140311 in words is "seventy-seven million, one hundred forty thousand, three hundred eleven".