1340531404 has 24 divisors (see below), whose sum is σ = 2402120448. Its totient is φ = 654395280.

The previous prime is 1340531393. The next prime is 1340531443. The reversal of 1340531404 is 4041350431.

It is a super-2 number, since 2×1340531404² = 3594048890220422432, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6339 + ... + 52165.

It is an arithmetic number, because the mean of its divisors is an integer number (100088352).

Almost surely, 2^1340531404 is an apocalyptic number.

It is an amenable number.

1340531404 is a deficient number, since it is larger than the sum of its proper divisors (1061589044).

1340531404 is a wasteful number, since it uses less digits than its factorization.

1340531404 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 46005 (or 46003 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 25.

The square root of 1340531404 is about 36613.2681414812. The cubic root of 1340531404 is about 1102.6194882518.

Adding to 1340531404 its reverse (4041350431), we get a palindrome (5381881835).

The spelling of 1340531404 in words is "one billion, three hundred forty million, five hundred thirty-one thousand, four hundred four".