40378311 has 24 divisors (see below), whose sum is σ = 61209840. Its totient is φ = 26307216.

The previous prime is 40378309. The next prime is 40378313. The reversal of 40378311 is 11387304.

It is an interprime number because it is at equal distance from previous prime (40378309) and next prime (40378313).

It is not a de Polignac number, because 40378311 - 2¹ = 40378309 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40378313) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 59305 + ... + 59981.

It is an arithmetic number, because the mean of its divisors is an integer number (2550410).

Almost surely, 2^40378311 is an apocalyptic number.

40378311 is a deficient number, since it is larger than the sum of its proper divisors (20831529).

40378311 is an equidigital number, since it uses as much as digits as its factorization.

40378311 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 780 (or 727 counting only the distinct ones).

The product of its (nonzero) digits is 2016, while the sum is 27.

The square root of 40378311 is about 6354.3930473335. The cubic root of 40378311 is about 343.0699792336.

The spelling of 40378311 in words is "forty million, three hundred seventy-eight thousand, three hundred eleven".